Let's talk a little about the comparative evolution of the development of engine building on the example of diesel BMW engines- they clearly illustrate almost all known trends in this area. For simplicity of presentation - on the example of generally accepted stamps.
"Pulls like a diesel", "Moment like a diesel" and so on ...
Subjective impressions of the "torque" of modern diesel engines are associated with the presence of a turbocharging system. Atmospheric diesel engines are practically out of use - a noticeable shift in the peak of the torque characteristic to the area low speed would not be as noticeable in their case as in the case of a comparison of a modern turbo diesel engine with atmospheric gasoline. In absolute terms, constructions comparable in volume do not show a visible difference, both in the turbo and in the "atmospheric" version.
To understand this fact, let's compare the first "mechanical" "atmo" diesel engine BMW M21 with its direct relative - gasoline "M20". With an almost identical displacement, the power figures are not in favor of the diesel: 86/4600 and 171/5800. Moment 152/2500 vs 226/4000! Two simple conclusions: a diesel engine simply has a smaller operating range, from which it reaches maximum power and torque earlier, but has a lower specific power and torque. Any motor is a "constructor" - add a turbine - we get the M21 "turbo" version - the moment now easily catches up with the gasoline engine in absolute value and is almost compared with it. Let's add additional air cooling - and we will overtake gasoline in terms of specific moment. All this can be seen in the evolution of the next generation of diesels - M51. There was both a pure turbocharged version and a version with an intercooler. The dependencies are the same - the moment is about (turbine) or a little more (turbine + intercooler), but the power is significantly less than the modern M50 gasoline version. No miracles.
However, the turbine is a flexible tool - the evolutionary development of diesel BMW engine N57 soon confidently overtook the aspirated - 286 hp. and 580 Nm! No atmospheric BMW M54 stood next to it with its 231 hp. and 300 Nm.
Well, it would seem that the parallel development of different technologies should further dilute diesel and gasoline.
Nothing like this! A modern gasoline engine is now equipped with direct injection and a turbine, and the sound of a modern diesel engine is already difficult to distinguish from a gasoline engine with direct injection.
In motion, pronouncedly "gasoline" engines such as M50, M52 and S54 could not be confused with diesel contemporaries - M51 and M57 - their torque characteristics were almost mirror-like, and the operating range could differ by almost half. Gasoline went in proportion to the speed - the more you press, the faster you go, while the diesel engine started to pull almost immediately, but quickly "faded".
Today, a modern turbocharged version of the N54 or N55 gasoline engine is distinguishable from the N57 diesel only in terms of sensations from a shorter operating range.
Comparison of torque characteristics at first glance demonstrates noticeable differences from the engines of the first generations - the gasoline engine has a long shelf of torque 1400-5000 - almost for the entire operating characteristic. A diesel engine of comparable performance also seems to have a shelf, but incomparably narrower - no more than 1000 revolutions. The forced versions of the “shelf” are narrowed, and the diesel has a width of only 225 revolutions!
The dependence is very simple - the farther we move towards forcing the characteristics of the motor, the more the torque characteristic bends - for a diesel engine towards low speeds, for gasoline - towards high ... how it started thirty years ago, to what, oddly enough, and came. Another conclusion: the modern "shelf" gasoline unit is clearly less boosted than its diesel counterpart.
In absolute terms, new diesel engines even slightly outperform their gasoline counterparts in terms of torque, but the integral torque (torque characteristic depending on speed) gasoline internal combustion engines noticeably wider.
Diesel is more economical
The principle itself diesel internal combustion engine(compression ignition) is not at all more economical - diesel fuel is even somewhat inferior in caloric value of combustion. It would seem that everything is decided by the degree of compression (excess of boost) - it is about one and a half to two times higher. Higher compression - higher efficiency. Higher efficiency - lower specific consumption. About 30% real savings in average fuel consumption are quite achievable. In fact, where the ability to operate a diesel engine on extremely lean mixtures in the area of partial loads and idle move- the most demanded modes in the city. The city consumption of a modern diesel engine from BMW is 11-12 liters. Gasoline of comparable power in the same rhythm of movement - well, no less than 15-16.
In highway mode, at equal speed, engine costs different types almost indistinguishable. A noticeable difference is only in more favorable urban conditions for a diesel engine.
Diesel is more environmentally friendly
Diesel is indeed relatively more environmentally friendly, but with modern neutralization methods (thermal neutralizers based on rare earth elements), a gasoline engine is preferable - it has a lower efficiency, and therefore more high temperature exhaust gases. The diesel neutralization system is more complex and expensive in practice. But the topic of ecology has long flowed from the mainstream of practical love of nature into the mainstream of politics.
Diesel is more reliable and has a longer resource
The problem of reliability and resource consists of a large number of components. There is no single answer. If we talk about the practical side of the matter, in relation to Moscow exploitation, then in general this statement is true. Upon closer examination of specific cases of defects and breakdowns, you can see that a gasoline engine is cheaper and more technologically advanced to repair. However, the more modern the model, the less noticeable the difference in technologies and repair costs. The times of primitive designs of gasoline engines, when the difference between them and diesel engines was exhausted by really expensive fuel equipment, have already passed. The difference, in principle, is exhausted almost only by the thermal mode of operation - and here the diesel wins - it is noticeably colder. The more modern "practice" became, the closer "theory" turned out to be. Previously, a million-plus diesel engine was atmospheric and derated. Now it's just cold. But even this turned out to be enough to have a noticeably longer resource, subject to the rules of operation.
Crossovers offer many types power plants from which it is often difficult to choose the appropriate option. Often the difficulty is the choice between diesel and gasoline. Let's figure out how both types of engines differ and what is taken into account when choosing.
Features of diesel and gasoline engines
First, let's look at the pros and cons of crossovers with gasoline engine:
Among the disadvantages of gasoline engines, fuel consumption is often distinguished, which increases due to the increasing number of revolutions. In addition, mid-size and full-size crossovers do not consume little fuel, so economy lovers should not choose a car with a consumption of 20 liters of gasoline per 100 kilometers;
the gas line is traditionally located on the bottom of the body, so that when driving off-road or when driving carelessly, it can easily be damaged. Such malfunctions in isolated cases even lead to ignition;
gasoline unlocks the speed potential of the engine. What is the cost of the gearbox - automatic or mechanics - a matter of personal preferences and skills;
a gasoline engine in the winter starts much better than a diesel one. You will not need additional additives, and the risk of not warming up somewhere in the outback is an order of magnitude less here;
By design, gasoline engines differ little, so mechanics are much more willing to take on their repair than diesel ones;
an experienced driver can set up a gasoline engine on his own or set it up so as to get to a service center;
Difficult operating conditions affect the quality of the motor much less. Burnt out gasoline contains fewer impurities, so that the working life of the engine lasts longer, and major repairs are carried out less often. It is also important that low-quality fuel can be consumed without a negative effect (if it is not abused).
Consider the features of diesel engines.
Diesel consumes on average 20% less fuel than gasoline engines. For the price, the DT does not differ from the same AI-95. Low-quality diesel fuel contains an unlimited amount of impurities, so it is better to opt for proven gas stations;
Diesel engines are valued for their increased torque on low gears. This means that off-road fuel consumption increases;
the dynamics of crossovers with a diesel engine are not as good as those of their gasoline counterparts. This does not apply to adjusted units with a volume of 2 liters or more, which are installed on bmw cars, Audi and other famous manufacturers;
Not every owner of a car with a diesel engine likes the smell of diesel fuel and engine noise, which is noticeable with poor sound insulation;
crossovers combine well with four-wheel drive and a diesel engine. Even a heavy machine with a full load overcomes many obstacles without slipping, delivering the necessary power at low revs;
When driving smoothly, a precipitate forms on the diesel injectors, which causes a loss of power. The way out is periodic regassing;
diesel is unpretentious, so you rarely have to set it up yourself. However, problems often arise during repairs: maintenance of diesel engines is expensive, and fuel system requires periodic fine-tuning, which is almost impossible to carry out on your own;
One of the main disadvantages of diesel engines is the difficulty in the cold season. If you don't have warm garage, a powerful battery and a pre-heater, you will have to get used to using a blowtorch and other delights of warming up cars in winter.
Which engine to choose - diesel or gasoline - is a matter of taste and possibilities. For some disadvantages of motors, you will have to pay with a ruble, for others - with patience. The choice of engine largely depends on the specific crossover model.
Renault Duster: diesel or gasoline
Renault Duster is in demand in Russia. He is among those budget crossovers, which combine functionality, appearance and economy. In 2015, the second generation of the car became available. No cardinal changes were made, however, in addition to minor changes in the body and lighting equipment, the engine line was replaced. In terms of power, the power units remained the same; in terms of efficiency, they are not inferior to their predecessors.
There are 3 engine options to choose from: two petrol and a diesel. The junior gasoline engine has a power of 114 Horse power with a volume of 1.6 liters. The front-wheel drive version of the crossover with this engine accelerates to 100 in 11 seconds, with all-wheel drive in 12.5 seconds. It is completed with mechanics and consumes in mixed mode 7.6 liters of AI-95 per hundred.
But the older gasoline counterpart produces 143 horsepower with 2 liters of volume. The motor is completed only with all-wheel drive, but they also offer an automatic from the gearbox. With automatic transmission Duster, acceleration to hundreds takes 11.5 seconds, and fuel consumption is 8.7 liters in the combined cycle. The mechanics on Renault are more fun: 7.8 liters of the 95th, 10.3 seconds to a hundred - the best indicator for this car.
When compared even with cars, Duster consumes less fuel, which is offset by the low power of the engines, and hence the slurred dynamics. The owners note that only with the older engine is it possible to feel confident when overtaking, in other cases it is necessary to overtake with a margin. The minimum cost of a crossover with a junior gasoline engine and front-wheel drive is $9620.
With a diesel engine, it’s even sadder: 1.5 liters, 109 horses and only a manual transmission complete with all-wheel drive. 13.2 seconds are required to accelerate to 100, which is a lot even for a diesel crossover. However, a small volume has back side: fuel consumption, which is 5.3 liters in mixed mode and only 5 liters of diesel fuel on the highway. According to this indicator, the Duster is one of the most economical diesel crossovers, especially considering the price - $ 13,580.
With diesel engine an unpleasant feature is connected: some copies of the previous generation of the crossover completely refused to start in the cold season. The manufacturer recommended, in order to avoid trouble, to use the services of proven large filling networks. This problem was promised to be fixed in the new generation, so with the onset of cold weather, we will find out if it became diesel Renault Duster 2015 model year feel better in winter.
The choice of the Renault Duster engine depends on how much you are willing to put up with the measured driving. If you want to frolic at least a little on this car, choose the petrol option. If you have the opportunity to provide the car with a comfortable wintering and are you ready to put up with a measured pace of driving, choose a diesel engine. In any case, you are guaranteed the efficiency and reliability of engines.
Choosing an engine for the BMW X5
Everything is easier with BMW engines: diesel and petrol units remarkable in their own way, so the choice is largely determined by the tastes of the owner. For the BMW X5, 6 engines are offered, including only 2 petrol and 4 diesel engines. The junior gasoline engine has a volume of 3 liters, while giving out 306 horsepower. With it, acceleration to 100 takes only 6.5 seconds, and fuel consumption is 8.5 liters of AI-95 in the combined cycle. The older engine is even more impressive: 4.4 liters and 450 horses accelerate the crossover to hundreds in 5 seconds, although fuel consumption exceeds 10 liters in the combined cycle. Minimum bmw price The X5 is $53,500, so the owners of such cars do not always want to save on fuel.
BMW diesel engines, as the owners say, are “more interesting” to handle. The crossover does not show any loss of dynamics with any of the four diesel engines. There are plenty to choose from here:
- 2 liters, 218 hp;
- 3 liters, 249 hp;
- 3 liters, 313 hp;
- 3 liters, 381 hp
The "weakest" of the engines of this type accelerates the crossover to 100 in 8.2 seconds and consumes 5.8 liters of diesel fuel. But the oldest of the engines consumes 6.7 liters in the combined cycle, and accelerates in 5.3 seconds. You won’t be able to drive like a top-end gasoline engine, but such indicators are more than impressive. Noise isolation in a German car virtually eliminates the penetration of engine noise into the cabin.
The owners note that in winter the crossover also feels confident: when using high-quality fuel, there are no problems with starting. Climate control will not immediately drive cold air through the cabin, but will wait until the engine warms up. In addition, this car has heated seats and a steering wheel, so you simply won’t have time to freeze. The minimum price for a diesel BMW X5 is $56,050.
Which engine to choose for a BMW - diesel or gasoline - is purely a matter of your preferences. If you have already dealt with diesel engines, want to save a little on fuel and are ready to put up with the loss of tenths of a second during acceleration, take a diesel.
If fuel consumption does not matter to you and you want to feel the fullness of the drive, opt for gasoline engines. Both options are good, with any of the engines the crossover will have enough power even on dirt roads and moderate off-road. One but: the price of the car, costly repairs and high taxes.
Which is better for Kia Sorento: gasoline or diesel
With Korean crossover it's not as easy as German car. The new generation Sorento has two engines: a 2.2-liter diesel and a 3.3-liter gasoline. Such a meager assortment has an explanation. The owners of cars of the past generation of the crossover unequivocally stated that if there is enough money for a diesel engine, then it is better to buy it. The 2012-2015 Sorento diesel engine gave enviable traction, quickly overtaking and starting from traffic lights. Gasoline engines of previous models of 2.4 liters, again according to the owners, “did not drive”, so lovers of dynamics bought either a diesel or a 3.3-liter gasoline engine.
current KIA engine The 2015 Sorento puts out 200 horses on diesel, accelerating the car to 100 in 9.6 seconds, consuming 7.8 liters of fuel on the combined cycle. Engine power is felt immediately, but there is one thing. For a comfortable ride on a diesel engine, you need to use only quality fuel and necessary additives. In this case, there are no problems with either a loss of power or a start in the cold season. The most affordable crossover with a diesel is $34,200.
A 250 horsepower gasoline engine accelerates the crossover to hundreds in 8.2 seconds. It consumes 10.4 liters of fuel in the combined cycle, so the diesel is more economical, but the gasoline engine is 3.3 liters more dynamic. The crossover is equipped with all-wheel drive and automatic transmission. Petrol KIA Sorento costs at least $36,450.
In KIA Sorento 2015, both engines are good, but in models of past years, everything is not so simple. If it is possible to buy diesel and do not have to wait for its delivery, if you are sure of good quality fuel - take a diesel crossover. The gasoline engine is interesting only with a volume of 3.3 liters.
Outcome
Diesel and petrol engines have their advantages. Much depends on the specific car model and your preferences. By examining the characteristics of each power units, sign up for a test drive and experience for yourself what they are capable of. This will help you make an informed and correct choice.
The German auto giant, which had previously produced only cars and motorcycles, in 1999 decided to start exploring the off-road niche. We are talking about the X5 model, which later became, in a sense, the quality standard in this area. Consider in the material such an important aspect as 100 km. On BMW in the fifth version all-wheel drive several types of motors are installed. Let's discuss some of them in more detail.
Variety of models
Since the Bavarian concern has a huge number of models, it makes sense to consider only one in a short article. And the choice fell on the X5, as one of the most voracious representatives of the motley BMW family. X5, for which it ranges from 10 to 40 liters, is famous for its good power and engine response, as befits a mid-engined crossover. However, as can be seen, the spread in consumption is quite large. Let's figure out why the numbers fluctuate in such a wide range.
Petrol
Rumors that gasoline engines are much more voracious than diesel ones have very real confirmation, if we talk about. Indeed, many owners report gigantic consumption figures. So, for a three-liter engine installed on the X5 in the back of the E53, that is, in the first generation of the crossover, produced from 1999 to 2006, the readings fluctuate within the following limits. The track is 12-13 liters, and in the city - 16-20. Well, more and more.
Fuel consumption per 100 km for a BMW with a 4.4 engine gives the following alignment. Highway - 14-16, city - 18-22. The 4.8-liter version shows record results. Here, the flow rate ranges from 21 to 40. It all depends on the driver's persistence in pressing the gas pedal and the mode of engine use. The most "evil" in terms of gluttony is sports. All figures, of course, refer to the operation of automatic transmissions, since the consumption on the "mechanics" is usually somewhat less.
Diesel
As for the more economical option using a diesel engine, everything is not so dramatic. It also depends a lot on the mode of operation. But let's look at some numbers. Fuel consumption per 100 km on a BMW diesel version also depends on the terrain factor. So, on the highway you can spend only 8-10 liters. The city, as usual, is more "tough" in terms of fuel losses. Here you can burn from 12 to 16 liters of high-quality diesel fuel. Everything, again, depends on the racing preferences of the driver and his luck in urban traffic.
findings
Fuel consumption per 100 km on a BMW, if we consider voracious crossovers, whatever one may say, is very rather big. Especially if you take a used X5 with a gasoline engine, which, by the way, after 50 thousand, gradually begins to “eat” oil.
As for another interesting representative of the Bavarian BMW crossovers X6, fuel consumption per 100 km is somewhat less for him, if we talk about the gasoline version. The three-liter engine is characterized by 8-10 on the highway and 14-16 in the city. All of these are big numbers. So, as you know, you have to pay for chic.
Such a non-trivial question, what to choose, BMW X1 gasoline or diesel, can become quite difficult for a potential buyer of this crossover without a careful study of the relevant characteristics. After all, the car is quite expensive and is bought with the expectation of long-term operation. In addition, gasoline and diesel are excellent not only in their characteristics, but also in price.
The updated BMW X1 is a machine with character. It is built on the basis of a 3-series passenger car and has independent suspension. Front - MacPherson struts, rear - multi-link. Accordingly, on the road, during operation and driving, the car demonstrates some habits of “three rubles”. The BMW X1 shows good stability at any speed: the steering wheel is perfectly obedient, and the suspension is well knocked down (it shakes on uneven areas, and on a high-quality surface - the car is glued to the road). The car goes into corners well with minimal roll.
What to choose, BMW X1 petrol or diesel? It depends on the driving style of the future owner of the car, and on his road preferences. It’s worth mentioning right away that this SUV, contrary to the name, does not show very good results on off-road tests. Even with very, it would seem, harmless sandy fragments or, for example, on muddy sections of a dirt road, it shows poor cross-country ability, gets stuck and moves with some difficulty.
In general, what can I say: it’s not worth the risk and move it off hard pavement(at least - to leave the track very far). After all, the elements of the BMW X1 are high-speed highways, city streams. A speed: this car I want to go faster and faster!
Comparison of engines
A two-liter gasoline with a 6-speed manual transmission or automatic transmission - accelerates to hundreds in less than 8 seconds. Maximum speed - 215 km / h. It eats less than 6 on the highway, up to 9 in the city. As you can see, pretty decent and energetically sound data.
Diesel, on the other hand, is even more economical. And let it accelerate to hundreds longer, and maximum speed is 190 km / h, we have an excellent result in terms of diesel fuel consumption: on the highway - less than 5, and in mixed mode - less than 6! By the way, this diesel crossover ranks second in terms of efficiency for its class, so buying a diesel engine, at least, becomes a very profitable option. Although you can't drive on a diesel engine like you would on a gasoline engine.
winter stories
In endless conversations and opinions about what is still better: whether gasoline or diesel, a weighty fact for fans of gasoline engines is its easier and more convenient operation in winter, especially at temperatures below -25 ° C. They say that diesel engines, they say, do not start at all in the cold, but in the cars themselves (if they did start, for example, in a garage) it can be very cold, because the diesel engine heats up more slowly to operating temperature, and, accordingly, the stove much worse heats inside the cabin space.
Contrary to these popular beliefs, the stove in the diesel version of the BMW X1 starts to function quickly and does not heat at all quietly. When started outside the garage at -24°C, according to the observations of the eyewitness owner of the car, it starts normally at start. And when the engine has not yet warmed up, the climate controller will not drive cold air flows throughout the cabin, creating drafts, but will wait until the stove warms up a little.In addition, one of the significant advantages in the cold is the heating of the seats and the steering wheel: in just a minute you are sitting in a warm chair and holding on to the warm steering wheel, which is nice in the dog cold that is outside the car.
Results
So in the question of what to choose, BMW X1 gasoline or diesel, many potential owners of a modern SUV still incline their choice in favor of a diesel engine, as more economical. And the problem that a car (diesel version) supposedly starts up badly in cold weather is considered by some to be far-fetched. After all, a lot depends on the quality of the fuel being poured in this matter: pouring any kind of diesel fuel of unknown origin, trying to save money - one result, pouring normal winter fuel with additives - completely different. And the notorious manufacturing company itself has recently been recommending its customers to purchase diesel engines, because many European countries have switched to such fuel (especially the bio option). Now it's probably Russia's turn.