At the upcoming Beijing auto show , in addition to launching the Vision IV concept car and the cutting-edge A0-size Jianghuai Yue Yue, the JAC cars that have achieved outstanding performance in the passenger vehicle market in recent years will also be presented with five self-developed engines. Review. The five engines are the 1.3 VVT engine, 1.5 VVT engine, 2.0 T turbocharged engine, 1.0 V VT engine, four gasoline engines and one 1.9-liter diesel engine. What about these engine performances? The author will give you a technical analysis.

1.3/1.5 VVT engine, high torque at low speed

The 1.3-liter engine used by the 2008 Jianghuai Tongyue comes from Dongan Mitsubishi, which is codenamed 4G13. In addition to the use of JAC, Zotye 2008 and Racing 1.3 are also used. The engine used by JAC Huaiyue in 2010 is a brand-new engine independently developed by JAC. The internal code of JAC is HFC4GB1.3C. Compared with the original engine, it uses advanced technologies such as dual overhead camshafts, VVT, cast aluminum cylinder heads and cylinders.

The single overhead camshaft engine has the characteristics of low cost and convenient maintenance, but because of the large number of reciprocating parts and the large inertial mass, it is not conducive to high-speed engine movement. Moreover, the slender tappet has a certain degree of elasticity, which easily causes vibration, accelerates the wear of parts, and even makes the valve lose control. The dual overhead camshaft has a clear structure and the intake and exhaust valves are driven separately, so the gas distribution to the entire engine is more accurate and can effectively improve the fuel efficiency of the engine. Dual overhead camshafts are already very mature and advanced technology, and they are the first choice for most engines.

The VVT ​​technology is believed to be very familiar to everyone. This is the same as dual overhead camshaft technology to make the valve control more in line with the actual operating conditions of the engine. It uses the hydraulic system to change the phase of the camshaft to control the valve opening time. The more advanced VVT technology also uses the hydraulic valve lifter to change the intake and exhaust valve lift of the engine to achieve more precise control.

The advantages of the cast aluminum cylinder can reduce the engine's own weight and reduce the vehicle's fuel consumption. The cast iron cylinder has the advantages of mature technology and low cost. At present, most of the mainstream domestic engine manufacturers mainly use cast iron cylinders for cost control. A new generation of research and development engine will use cast aluminum cylinders.

The JAC 1.3L VVT engine has improved its performance under the guarantee of many new technologies. The maximum power has been increased by 4Kw to reach 73Kw, and the maximum output torque has increased by 12Nm to 126Nm, which is 1.3L with the Honda Fit. Drums quite. In terms of actual performance, the 10 models of 1.3L Tongyue loaded with the new engine increased the acceleration time by more than 2 seconds to a time of 11.3 seconds. This is already quite a good result. From this point of view, we can also see that the new engine has a slight improvement in low-speed torque.

In addition to the 1.3L VVT engine, JAC's 1.5L VVT engine, codenamed HFC4GB2.3C, also uses the same technology as the 1.3L VVT engine. Compared to the original Mitsubishi 1.5L naturally aspirated engine, the maximum power is increased by 7Kw. At 83kw, the maximum output torque increased by 16Nm to 146Nm. It is believed that after the new engine is applied to JAC Wyatt or Harmony, the vehicle's power performance will be greatly improved.

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2.0T turbocharged engine, very good and powerful

JAC will also exhibit the first turbocharged intercooled engine independently developed at the Beijing Auto Show with a displacement of 2.0L. Turbocharging is the current major engine trend. Under the same displacement, turbocharger technology can make good use of the kinetic energy of the exhaust gas to provide more pressure for the engine intake, effectively increase the engine's power, and reduce the vehicle's fuel consumption.

JAC's internal turbocharged engine, codenamed the HFC4GA3-1B, has a maximum power of 130kw and a power rating of 65kw. The maximum output torque is 235Nm. Compared with the 2.0T turbocharged engine on the Chery Ruiqi G5, JAC has a 5Kw advantage in maximum power and the maximum output torque is the same.

1.9L turbocharged diesel engine for fuel economy

In addition to the three gasoline engines described above, JAC will also display their first diesel engine at the Beijing Auto Show. The internal code name is HFC4DB1-2C. This 2.0L displacement engine uses advanced technologies such as TCI turbocharged intercooler, high pressure common rail fuel system, and EGR exhaust gas recirculation system. The specific parameters are shown in the following table:

In terms of performance, JAC's 1.9L diesel engine is worth looking forward to. Compared with the 2.5L turbocharged diesel engine assembled by Great Wall Haval, which has the largest sales volume in China, the maximum power of the JAC diesel engine is 25Kw higher. In terms of maximum output torque, the JAC 1.9L diesel engine also has an advantage of 8Nm, and can output maximum torque in the 1800-3600Rpm speed range, while the Great Wall 2.5T diesel engine's maximum torque speed range is only 1800-2400Rpm. With such strong power, the minimum fuel consumption of this 1.9L turbo diesel engine from JAC is only 210g/kW.h, which sets a new benchmark for the fuel consumption of its own-brand passenger car diesel.

1.0 Autonomous VVT for the A0 platform

In order to tie in with the newly launched A0-grade platform product Yueyue, JAC passenger car's own research and development of the internal combustion engine code-named HFC3GB4.3C 1.0 displacement engine came into being. This 1.0-liter displacement engine uses a VVT technology that is more energy-efficient and has a 3-cylinder power of 51 kW. For a low-emission vehicle equipped with an A0-class car, the engine's power response can be It satisfies the daily requirements very well. Although there are not many outstanding advantages in power, it is equipped with VVT technology. For owners who are mainly used in urban transportation, reducing fuel consumption and saving cost is the last word. Whether the actual fuel consumption performance will be better than we expected, there is still more user feedback after the official listing.

Summary: Since Jianghuai Pinnacle was listed on the Guangzhou Auto Show in 2007, Jianghuai Automobile has steadily hit the passenger car market and successively launched the Tongyue sedan, Tongyue RS, Heyue sedan, Heyue RS, and the upcoming A0 in Beijing Auto Show. Grade car Yue Yue. In the research and development of the engine, Jianghuai always adheres to the goal of environmental protection economy and high performance. The newly introduced engines are all at the domestic advanced level. The five engines to be displayed at the Beijing Auto Show will surely be the focus of media and visitors' attention.

According to industry analysts, the 13 models of the 6 platforms of this auto show plus 5 full-line demonstrations of self-developed engines directly reflect the strong independent research and development strength of JAC and the steady pace of construction, especially the application of new technologies and new dynamics. The development concept of JAC's green, science and technology, and humanism was demonstrated. Under the background of the development of self-owned automobile brands, the sales volume of passenger cars of Jianghuai has hit new record highs, and JAC passenger cars have gradually grown into mainstream automobile brands in China.

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