What is the most powerful engine at present? Why is it awesome?

Audi 2-liter turbocharged TFSI straight 4 engine

1, Audi 2 liter turbocharged TFSI straight 4

Some people criticized Audi's new hatchback A3 for being too expensive. Obviously, they are not fans of the power plant. Otherwise, they will know the technical content of in-line four-cylinder turbocharged FSI engine. It is called the world's first engine that combines turbocharging and gasoline direct injection technology. Gasoline direct injection is an innovative technology that appears in the field of power plant and improves unit power, torque and fuel economy. This engine adopts variable-length intake manifold and excellent Borgwarner turbocharger system, which can almost overcome the lag between turbocharger and FSI. With this 2-liter engine, Audi and its parent company Volkswagen are in a leading position in the field of power technology.

FSI is the key to the development of Audi gasoline engine technology, and more and more Audi product lines have begun to adopt this technology. Its only technical defect is short-term unstable operation at idle speed and low speed after cold start.

BMW 3-liter DOHC straight 6 engine

2, BMW 3 liters DOHC straight 6

BMW considers itself the strongest engine of its kind, and almost no mass-produced engine takes all the details into account so well. From the data point of view: the performance of 63 kW/L makes it in the leading position of unit power of 6-cylinder engine. The improvement of this parameter is largely attributed to the variable valve lift system of electronic throttle. The electronic throttle increases the available engine speed variation range. The speed warning line is as high as 7000 rpm, while keeping the speed of peak torque at an extraordinary 2750 rpm. In addition, this technology can significantly reduce emission levels and improve combustion efficiency.

Another technological leap of this engine is the use of aluminum-magnesium synthetic engine block. The crankcase on magnesium alloy forms a shell around the aluminum cylinder. The application of new materials increases strength and reduces weight.

BMW 3-liter turbocharged DOHC straight 6 engine

3, BMW 3 liter turbocharged DOHC straight 6

In the United States, if people want to get a more powerful engine, they will first consider buying a product with a larger displacement, but the BMW 335i equipped with a new twin-turbocharged straight 6 engine is willing to change some Americans' thinking.

BMW once disdained to add turbocharging equipment to mass-produced gasoline engines, but now this concept has changed. This set of twin turbochargers is matched with BMW's classic straight 6 engine, which has complex structure but remarkable effect. The displacement of 3 liters actually has a maximum power of 220 kW and a peak torque of 407 Nm, in which the peak torque can be kept in a fairly wide speed range. Its lifting power reaches 74 kilowatts, far exceeding the value of many 8-cylinder engines.

Daimler-Chrysler Hemi5.7 liter OHV V8 engine

4. Daimler-Chrysler Hemi 5.7 liter OHV V8

Many Chrysler 300C customers who bought the 5.7L HemiV8 engine chose this car because of their persistent nostalgia for the muscle car and the simple and shocking name "Hemi". Chrysler's 5.7-liter Hemi V8 engine, which won the annual 10 Best Engine Award for the fifth time, has a hemispherical combustion chamber, hence the name "Hemi".

The throttle response of the engine is very fast, and the running condition is as smooth as many overhead camshaft engines. The maximum power speed of 5200 rpm does not mean that it is a low-end V8 engine, and the carefully tuned exhaust and intake sounds are full of power. Although the cast iron cylinder makes it rather heavy, it saves the cost, thus forming a sustained impact on the market.

Another highlight of Hemi's success is the fuel-saving effect achieved through variable displacement control technology (MDS). When the engine does not need full power operation, the four cylinders can be turned off instantly, and MDS can quickly resume cylinder operation to release the full power of the engine when necessary. This technology can ensure that the comprehensive fuel consumption of vehicles is reduced by 20%.

DaimlerChrysler 3-liter DOHC V6 turbocharged diesel engine

5. Daimler-Chrysler 3 liter DOHC V6 turbocharged diesel engine

From the perspective of technological advancement, Volkswagen's V 10 TDI should be included in the top product of 10, but the price far exceeding 50,000 US dollars is the only reason for its failure. Then the diesel engine chosen is only Daimler-Chrysler V6.

This simple power machine is installed on Mercedes-Benz E320 Bluetec and Grand Cherokee CRD, which proves that it can play a role in cars and SUVs. The torque produced by diesel power system is far higher than that of gasoline engine with the same displacement, but the fuel consumption is 25% lower. In addition to the above highlights, this turbocharged * * rail diesel engine has another advantage, and its exhaust emission index can completely meet the ultra-strict environmental protection standards in the United States.

Ford Duratec 35 3.5 liter V6 engine

6. Ford Duratec 35 3.5 liter V6 engine

Ford's engine designers carefully select high-quality materials to build various parts of the cylinder, including cast aluminum piston with low-friction outer coating, piston connecting rod forged by metal powder and fully forged steel balanced crankshaft. The good performance of these components at high temperature not only makes the compression ratio of Duratec 35 as high as 10.3: 1, but also broadens the output range of its peak torque, which is the basis for comprehensively improving the performance of this engine. Computer-aided analyzer is applied to the management of intake system. According to the information continuously transmitted by each sensor, the intelligent electronically controlled throttle is adjusted to control the intake flow reasonably. As the mainstream engine of Ford Edge and Lincoln MKX, the new Duratec 3.5-liter V-6 engine should be said to be good in total power, but the rising power of 56 kW is different from that of Japanese rivals at the same level.

The full combustion of fuel in the cylinder makes its exhaust emission cleaner. The vehicle equipped with Duratec 35 can be sold directly in any state in the United States without modification, and even in California, where the most stringent exhaust emission standard "ULEV II" is implemented.

Ford 4.6 liter SOHC V8 engine

7. Ford 4.6-liter SOHC V8 engine

Strong sound and power are the most direct descriptions of this engine by Ford Mustang owners, so most fans will think that it is the best match with the quality of Mustang.

They are fascinated by the engine's wide power range and super torque in the middle and low speed range. Moreover, it is not easy to mass-produce the V8 naturally aspirated engine with a power increase of 48 kW. Generally speaking, single overhead camshaft is not suitable for variable valve timing system, because the intake valve and exhaust valve use the same camshaft, and the opening overlap angle between the intake valve and exhaust valve is constant no matter how the phase changes. However, Ford made a series of adjustments to this 4.6-liter single overhead camshaft V8 engine. Although the overlap angle of intake and exhaust valves is fixed, the phase change itself has been successfully utilized, and the maximum torque speed of 4500 rpm represents its potential. Due to the careful design of these details, its fuel consumption is not as terrible as people think, and it can be very friendly to use cheaper ordinary unleaded gasoline.

Mazda 2.3 liter DISI turbocharged straight 4 engine

8. Mazda 2.3-liter DISI turbocharged straight 4

In the United States, there is no hot-selling engine with a lower price than the Mazda 2.3-liter DISI turbocharged in-line 4-cylinder engine. The main competitors of this engine should be Subaru WRX STI's turbocharged 2.5-liter horizontally opposed 4-cylinder engine and Mitsubishi LanceEvo's turbocharged 2-liter inline 4-cylinder engine, both of which can output good power and torque. However, Mazda's machines are more sophisticated, easier to operate and cheaper.

Excellent design makes this new engine achieve super-class performance. The low-speed torque of Mazda DISI, a gasoline direct injection turbocharged engine, makes up for the lag phenomenon of turbocharging when the traditional turbocharged engine is idling and waiting for the turbine speed to increase. At high speed, the turbocharger can effectively increase the pressure. In addition to being able to output 89 kilowatts of power like Ferrari, its fuel economy and emission level are equally good.

Nissan 3.5L Double Overhead Camshaft V6 Engine

9. Nissan 3.5L double overhead camshaft V6 engine

An engineer from Nissan's competitor complained, "We should change this award to Ward's nine best engines of the year, because Nissan's VQ will automatically occupy a quota every year." This is a fact. Nissan's iconic product, the VQ family's 3.5L DOHC V6 engine, won the award for the third consecutive time/kloc-0.

Since this engine was first put on the market, Nissan has made a lot of technical improvements and upgrades. These include electronic throttle and variable valve timing control. The design basis still adheres to the modular design idea of VQ engine: emphasizing micro-machining of inner surface, paying attention to overall balance and reducing the weight of reciprocating parts as much as possible.

Through the operation of manual gearbox, it can be clearly found that VQ engine has sensitive throttle response characteristics in any speed range, and its reliable power and torque output is not limited to the narrow middle speed range, and its rising power of 63 kW is no less than that of any opponent.

Toyota 3.5L Double Overhead Camshaft V6 Engine

10, Toyota 3.5L DOHC V6

Toyota has realized that the technological innovation of vehicle powertrain should be given priority. This 3.5-liter V-6 engine is the result of various scientific and technological advances, and also sets an industry standard for similar products.

After adopting a novel system combining gasoline direct injection and port fuel injection, the engine of Toyota code 2GR-FSE can produce a peak of 225 kW, even exceeding some well-received V-8 engines. Advanced fuel supply system and high compression ratio design of 1 1.8: 1 are the keys to strong engine power and high combustion efficiency. Adding indirect fuel supply to the gasoline direct injection system can optimize the composition of the mixture and give full play to the advantages of the system: improving the middle and low speed torque, improving fuel consumption and meeting ULEV-II requirements.

In addition to the revolutionary oil supply system, it also adopts many other high-tech components, such as the unique plastic diversion device used on the cylinder liner, which makes the refrigerant preferentially cool the upper part of the cylinder liner and reduce the temperature of the cylinder head.

Toyota engineers said that this 3.5-liter V6 engine is the cornerstone of establishing the Lexus brand as a power technology leader. Soon, all Lexus gasoline engines will adopt direct injection technology.