How is the domestic "Top Ten Engine" elected?

The “China Hearts” Top Ten Engines of 2017 will be launched in the second half of this year. "China Hearts" Top Ten Engines and "Ward's 10 Best Engines" and "International Engine of the Year" are ranked as the world's top ten engine selections, reflecting the Chinese market and North America respectively. Technical trends and manufacturing standards for the top engine products in the market and European market. Compared with the latter two, the "China Heart" annual top ten engine selection focuses more on the market performance of the participating models and the effect of energy conservation and emission reduction.

Before the release of this year's top ten engine selection results, we reviewed the winners of the "China Hearts" 2016 top ten engines, FAW-Volkswagen, FAW-VW Audi, FAW Toyota, GAC Toyota, JAC, SAIC GM, and Geely Automobile. Among the ten outstanding engines from Dongfeng Peugeot, Dongfeng Citroen, Xiaokang Power, Dongfeng Honda and Changan Ford, ten outstanding engines were impressively listed. They stood out from all the 40 engines participating in the competition and won the “China Heart” 2016 tenth year. Good engine title.

Let's take a look at the outstanding performance and technical highlights of these top-ranking engines.

FAW-VW Audi 2.0T Gasoline Engine

The FAW-VW Audi 2.0T gasoline engine has advanced electronic engine temperature management, exhaust manifold and cylinder head integration. Compared with the second generation, the third-generation 2.0T engine has a maximum power of 165 kW and a peak torque of 350 Nm. The outstanding power of 2.0T combined with the chassis of the sports car brings outstanding driving feeling.

Inside the engine, the exhaust manifold is designed in the cylinder head, and the layout of the cooling system is further improved. This not only allows the engine to heat up quickly during cold start, but also has a good cooling effect to ensure that the engine can always be at the optimal temperature. jobs. The friction is also optimised in the cylinder, the piston liner and the piston ring are modified, the crankshaft bearing size is adjusted, the switchable piston is used to cool the injector, etc. The friction between the components can be reduced to varying degrees, thereby prolonging the engine life. .

In addition, the lightweight is also the bright spot of this engine, also is the all aluminum engine, but because has adopted the thin cylinder wall, so the engine has also been optimized in the weight, the third generation 2.0T engine has reduced 5Kg compared to the second generation, Only 122kg.

FAW Toyota / GAC Toyota 2.0T Gasoline Engine

The same 2.0T gasoline engine from FAW Toyota and GAC Toyota has four advanced technologies: dual-injection, double-scroll, double-cycle, and water-cooled intercooler. Each technology incorporates Toyota's forward-thinking thinking.

Toyota had already foreseen a simple board with a lot of carbon deposits in the cylinder and easy to burn the engine oil. In 2005, the world's first D-4S dual-injection technology, creative fusion of in-cylinder direct injection and manifold injection technology.

Toyota's 2.0T petrol engine is powered by the latest optimized D-4S technology and is first introduced on turbocharged engines. With advanced dual injection technology, Crown D-4ST 2.0T+ engine can use manifold injection at cold start, low load, and idling conditions, combined with two injections at medium and low loads, and switch to cylinder at high load conditions. Direct injection not only reduces the engine carbon deposit, the engine's fuel economy is better, but the exhaust emissions are also better.

Gasoline engine generally adopts Otto cycle, it can have strong power; Atkinson cycle is very fuel-efficient, but the high turning force is short. If the Atkinson cycle and the Otto cycle can be realized on the same engine at the same time, it will be able to combine strong power with economical fuel economy. Based on the original variable valve timing technology, Toyota added a set of active components to achieve a wider range and more precise control of the valve. This allows the 2.0T petrol engine to switch between two cycles. This saves fuel when it's time saving, and it's also going strong when it comes to power. This is Toyota's latest dual VVT-i(W) variable timing valve technology.

Toyota also incorporated the advanced double-scroll technology into the 2.0T gasoline engine. The double-scroll technology divides the engine exhaust gas into the turbine assembly in two ways. It can avoid the interference between the two adjacent cylinders and reduce the turbo lag. , improve the dynamic response. To further improve the dynamic response, Toyota is also working on exhaust manifold cooling. Cylinder head integrated scheduling manifold is currently a relatively new mainstream technology. The 2.0T gasoline engine also puts a cooling channel around the exhaust pipe to cool the exhaust gas. In this way, the engine's low-speed power can be increased, the exhaust gas can be cooled in advance, the burden on the intercooler can be reduced, and the low intake air temperature can be ensured under various conditions, which will pave the way for improving power and torque.

In addition, the Toyota 2.0T gasoline engine uses a water-cooled intercooler. In the development of the 2.0T gasoline engine, Toyota had made a comparison between water-cooled intercoolers and air-cooled intercoolers. After the water-cooled intercooler was used, it was found that the intercooler could be installed closer to the engine body, the dynamic response would be more direct, and the cooling effect of the intake air would be better. The difference in accelerometer performance between 0-100km/h for the two different intercoolers is 0.3S. The final mass production of the Crown 2.0T+ model uses a water-cooled intercooler, and the 0-100km/h acceleration time is only 7.7S.

The efficiency, power, energy consumption, and stability of the Toyota 2.0T gasoline engine are further improved. Not only does the thermal efficiency reach an unprecedented 36%, but it also achieves a powerful power index with a maximum power of 173kw and a maximum torque of 350Nm.

Geely Automobile 1.8T Gasoline Engine

The second-generation 1.8T turbocharged engine independently developed by Geely is at an industry-leading level in design, technology, fuel economy and performance.

Based on turbocharging, Geely added a series of advanced technologies such as double-layered stainless steel exhaust pipe, DVVT, double-balanced shaft, silent chain, and hollow sodium-filled valve to the engine to make it more fuel-efficient and stable. Sex and other aspects have advantages over other products of the same class. The ultimate power of this 1.8T engine is 163 horsepower/5500rpm, and the maximum torque is 250N•m/1500-4500rpm. The performance parameters can be comparable to or even exceed the 2.0L naturally aspirated engine.

Geely's second-generation 1.8T turbocharged engine has been upgraded and upgraded on the basis of the previous generation, especially in terms of power performance, fuel economy and NVH.

In terms of power performance, Geely's second-generation 1.8TD engine is optimized through integrated high-efficiency turbocharging technology and engine airway mechanism, achieving synchronous high-torque and low-speed torque boost, resulting in a maximum power of 135kW/5500rpm and a maximum torque of 300N. • m/1750-4000rpm, 0-100km/h acceleration time is only 9.5 seconds. Compared with the previous generation, the second-generation 1.8TD engine has increased its power by 12.5% ​​and its torque has increased by 20%.

In terms of fuel economy, this engine uses BOSCH's new-generation fuel injection technology and a newly designed low-friction piston and thermal management system to improve fuel efficiency and improve fuel economy. The combined fuel consumption per 100 kilometers is only 7.8L.

In NVH, the second-generation 1.8TD engine adopts more than 30 innovative designs such as a new generation of silent high-pressure oil pumps, VVT technology, high-pressure tubing noise reduction design, and acoustic optimization of the intake ducts, resulting in a significant increase in the sound quality of the engine and effectively reducing engine noise. The acceleration process is smooth, and variable displacement oil pumps are used to perform well in energy saving.

JAC 1.5T Gasoline Engine

JAC's 1.5T gasoline engine was awarded the top ten engines of 2015 by virtue of its perfect combination of "in-cylinder direct injection," "turbocharging," and "DVVT." In 2016, on the basis of the original, the new 1.5TGDI engine was equipped with fuel-saving technologies such as start-stop, variable oil pumps, electronic thermostats, and switch-type water pumps, which further reduced the comprehensive fuel consumption to 7.6L/100Km. The leading level in China is even more pronounced. The maximum output power is 128kw/4850~5500rpm, the power is up to 85.39kw/L, the maximum torque is 251Nm/1500~4500rpm, and even better than some joint venture brands' 1.5T engines.

Zou Bowen, deputy director of National Gas Vehicle Engineering Technology Research Center of “China Heart”, highly praised after the test drive: “This engine's performance index is more optimized than the previous generation, and it is not only a fast start in actual driving. , also outstanding performance in energy conservation."

Dongfeng Citroen 1.2T Gasoline Engine

Dongfeng Citroen 1.2T gasoline engine has assembled a large number of engine research and development fields and a number of advanced technologies of PSA. With the small turbine technology used, a 1000-rpm turbine is involved in the work, and a peak torque of 230 Nm can be achieved at 1750 rpm. In a silent motion, the effects of full-time, full-range T-power intervention can be achieved, and the maximum power can reach 100 kW.

Dongfeng Citroen 1.2T gasoline engine adopts high-intensity fuel injection pressure. When fuel is processed into the cylinder, it can achieve high atomization, and can be more fully integrated with the air, naturally improving the power of the vehicle. At the same time, the double continuous variable intake and exhaust timing system has become more intelligent, able to adapt to the speed requirements, adjust the intake and exhaust angle in time, achieve a more efficient gas distribution effect, and enhance driving pleasure and stability.

All-aluminum alloy cylinders are lightweight, highly integrated design with a hybrid cylinder liner with aluminum coating, reducing the overall quality of the engine, greatly enhance the power output; all steel forging crankshaft using German Schenck balancing machine to achieve the crankshaft High-precision dynamic balance control not only achieves light weight, but also enhances the stability of engine operation; advanced thermal management system can quickly increase engine operating temperature, improve engine operating efficiency, reduce fuel consumption and emissions, and comprehensive operating conditions fuel consumption Are controlled at 5L / 100 km. Wet timing belt, non-circular timing camshaft gear technology, innovative silent balance system, dual-mass flywheel, etc. ensure the smoothness of the 230THP (1.2THP) engine during driving, allowing consumers to enjoy driving while enjoying the passion. Comfortable and comfortable driving environment.

Well-off power 1.5T gasoline engine

The well-off 1.5T gasoline engine has achieved good performance in terms of dynamic performance, advanced technology, energy conservation, market performance, and field evaluation. It is built using Fiat's leading technology, with a maximum power of 110KW and a peak torque of 220Nm. It has excellent fuel economy and a comprehensive fuel consumption as low as 7.2L/100Km.

Changan Ford 1.0T Gasoline Engine

The Changan Ford 1.0T gasoline engine combines turbocharging, in-cylinder direct injection and dual variable valve timing. The maximum power is 92kw/6000rpm and the maximum torque is 170Nm. In the super-booster mode, the torque is up to 200Nm for 15 seconds. Has a very strong motivation. It is with the excellent talent of this engine that Fox has created a legend of 10 years and 9 crowns in the CTCC China Touring Car Championship.

While pursuing engine power, Fox is also striving to control the balance between strong power and environmental protection, in line with the actual consumer demand for fuel economy. The engine is equipped with a SelectShift 6-speed manual gearbox. The fuel consumption of the integrated operating conditions is only 5.6 litres/hundred kilometres; the engine is equipped with a manual transmission and the fuel consumption in the integrated operating condition is as low as 5.2 liters/hundred kilometres.

Shanghai GM Chevrolet 1.5L Gasoline Engine

The Shanghai GM Chevrolet 1.5L gasoline engine is equipped with innovative technologies such as automatic start and stop, GDI, dual VVT, aluminum cylinder, integrated exhaust pipe, and anti-friction technology, making a great progress compared to the old models. The displacement is 1490ml, the maximum power is 84kw/6600rpm, the power is up to 56.38kW/L, the maximum torque is 146Nm/4000rpm, and the lift torque is up to 97.99Nm/L. The weight of the entire battery and motor was reduced by nearly 10 kg.

Dongfeng Honda 1.5T Gasoline Engine

Dongfeng Honda's 1.5T gasoline engine is equipped with the fuel economy technologies such as automatic start and stop, GDI, dual VVT, aluminum cylinder, integrated exhaust pipe, waste turbocharger, two-stage variable displacement oil pump and anti-friction. The displacement is 1498ml, the maximum power is 130kw/6000rpm, the lifting power reaches 86.67kW/L, the maximum torque is 220Nm/1700~5500rpm, and the lifting torque reaches 146.67Nm/L.

FAW-Volkswagen 1.4T Gasoline Engine

FAW-Volkswagen 1.4T gasoline engine equipped with automatic start and stop, GDI, dual VVT, VVT-L, integrated exhaust manifold, turbocharger, two-stage variable displacement oil pump and anti-friction technology. The displacement is 1395ml, the maximum power is 110kw/5000-6000rpm, the power is up to 78.85kW/L, the maximum torque is 250Nm/1750-3000rpm, and the torque is up to 179.21Nm/L.