Domestic products must be hard! The strongest domestic 1.5T engine is the name of its own brand!

I don't know where to start, the disadvantages of domestic independent brands are reflected in the "three big pieces", so that the color change of domestic cars is discussed. Indeed, for a long time, the core technologies such as engines and gearboxes have been the chicken ribs of domestic independent cars, which has led many consumers to say that "what domestic cars are bought is not durable". In the case of long-term exposure, the image of "poor core components" of domestic independent brands has been established in the minds of consumers.

In fact, the technology accumulation of domestic independent brands in core components is obviously not as good as that of joint ventures and imported brands. Due to the long-term backwardness of domestic automobile industry, the technical basis and industrial level of automobile core components are far less than those of other multinational brands. So 1980, China opened its capital, sought channels to introduce foreign technology, and introduced the management and technology of multinational automobile enterprises.

At the beginning of the Millennium, China's reform and opening-up entered a brand-new situation, and more and more capital entered the car-making industry. The entry of private capital has made the domestic automobile industry develop more vigorously, changed the situation that the automobile industry only has state-owned capital and foreign capital, and made automobile brands and industrial models more diversified.

For a long time, private automobile enterprises have weak technology, and most of them started with plagiarism. The core components such as engines and gearboxes are assembled by themselves. Among them, Great Wall, Geely and Lifan also made their fortunes by copying, especially Huatai, Cheetah, Harbin Automobile, BAIC, Jianghuai and Chery.

Backward time, backward industry and backward thinking have made China's automobile enterprises suffer a lot, mostly because of core technology and assembly technology. China's automobile enterprises have suffered enough, not only in products, but also in brand marketing, brand value and word-of-mouth, which have been branded as cheap, not durable, poor brand value and so on, making domestic independent brands once depressed.

It must be mentioned that at this time, domestic independent brands ushered in their savior, that is, Shenyang Aerospace Mitsubishi. For a long time, many domestic independent manufacturers such as Great Wall, Geely, Southeast and Jiangling have been using engines provided by Mitsubishi. Some manufacturers have developed their own engine matching technology based on Mitsubishi engine. It can be said that domestic independent manufacturers basically realized their own engine manufacturing at that time.

After the "Great Leap Forward" in recent years, domestic independent brands have long been unable to compare with the backward automobile industry. At present, independent automobile manufacturers regard the thermal efficiency of the engine (the ratio of the energy generated by the engine's work to the energy consumed by its own engine) as an index to measure whether an engine saves fuel. ) has reached the advanced level in the world, surpassing the dynamics of Toyota? Thermal efficiency of power engine (up to 40% to 4 1%).

Recently, Dongfeng Motor Corporation released its 1.5T engine, which is the strongest engine in China at present. This engine is a new generation turbocharged engine of Dongfeng Motor, which adopts the latest modular and platform products of Dongfeng Motor. The engine has achieved technical indicators such as small displacement, high power and low fuel consumption, which strongly proves that domestic engines can be so "powerful"!

The code name of 1.5T engine is C 15TDR, which will be carried by all flagship models of Dongfeng Shen Feng brand, including the latest Shen Feng AX7. Among them, this 1.5T engine can output the maximum power of 125kW and the maximum torque of 250 Nm, and the power data exceeds that of the joint venture brand 1.5T engine, such as Honda's 1.5T engine.

At present, the thermal efficiency of technologically advanced gasoline engines can reach the range of 30%-35%, but 37% of the engines are considered excellent. Honda L 15B? 1.5T engine with thermal efficiency of 38%; The upgraded version of Volkswagen brand EA2 1 1 engine can also reach 37.5%; The thermal efficiency of Nissan's VC-TURBO variable compression ratio engine is as high as 39%.

Of course, to measure an excellent engine, not only in terms of thermal efficiency, but also in terms of power, durability, fuel economy, manufacturability, etc., all aspects of the engine should be balanced, so as to create a "famous machine" of eternal celebrities.

At present, Dongfeng 1.5T engine can reach 4 1.07%, which greatly exceeds the engine thermal efficiency of first-line joint venture brands such as Toyota, Nissan, Honda and Volkswagen, and becomes one of the engines with the highest thermal efficiency in the world.

Dongfeng 1.5T engine with such strong technical indicators naturally has "awesome" technical support. Obviously, these technologies have been deeply understood and understood by Dongfeng Motor, and an effective technical system has been formed to support advanced technology research and development and technology expansion.

1.5T engine can achieve such excellent thermal efficiency index and take the lead in carrying a number of advanced technologies:

Firstly, an efficient combustion system is adopted. Dongfeng Motor is equipped with a high-pressure direct injection system up to 350Bar for the 1.5T engine. At present, the pressure of fuel injection systems used by various brands is around 250-300Bar. That means that Dongfeng 1.5T engine can achieve better combustion effect in the engine, reduce exhaust particles, meet stricter emission standards, and also achieve stronger power and fuel economy (the better the atomization effect of the engine, the more complete the combustion).

Secondly, the Dongfeng 1.5T engine is a turbocharged engine, so the power output of any turbocharged engine has a great relationship with the turbine components used, as well as the power adjustment of the manufacturer, which is also related to the driving experience and power technical indicators of this engine. Dongfeng 1.5T engine adopts a new type of electronically controlled turbocharger, which is driven by integrated switched magnetic technology and a motor with excellent responsiveness (300 milliseconds instant response), which makes this 1.5T engine have good dynamic responsiveness and acceleration performance.

Thirdly, this 1.5T engine adopts an efficient EGR exhaust gas circulation system, which uses coolant to cool the exhaust gas device in the engine cylinder, so that the increase of exhaust gas recirculation can reduce the throttle loss of the gasoline engine under medium and low load conditions and improve the fuel economy of the power system. In addition, this engine also adopts the dual variable timing technology of intake valve and exhaust valve, which can adjust the opening and closing time of the valve according to different working conditions of the engine. Therefore, in the face of different vehicle working conditions, this engine can adjust the torque output and power well, thus achieving the purpose of fuel saving.

Fourthly, reduce the friction between the piston in the cylinder and the inside of the cylinder. The use of low-resistance friction materials makes the driver's driving experience more textured and fuel economy better. For example, in the previous VQ38 engine series, finidi added titanium alloy cylinder liners to reduce the friction between piston and cylinder. In addition, in order to reduce friction, Dongfeng 1.5T engine has also added technologies such as variable oil pump and electronically controlled PJC piston cooling nozzle.

Fifth, advanced engine thermal management technology. In order to achieve excellent thermal efficiency and performance of the engine, it is first necessary to implement intelligent thermal management to ensure that the energy lost by the engine is lost in the form of minimum energy. Therefore, Dongfeng 1.5T engine is added with electronic thermal management module computer to control the engine cooling system, so as to keep the engine in the optimal water temperature state, control energy loss and reduce fuel consumption. In addition, in order to achieve excellent thermal management, the integrated exhaust manifold of cylinder head, stamping process of water channel in cylinder body and optimization of intake and exhaust design are added, which optimizes the thermal management of engine and reduces fuel consumption.

Dongfeng 1.5T engine adopts a variety of core technologies and has made great efforts in thermal management. In addition, it also invested in the research and development of engine antifriction technology, which made this engine show its outstanding performance to the world and set a "craftsman model" for the domestic automobile industry. But in terms of engine application technology, the technology of an engine is far from so advanced, and the most important thing is the user experience and the durability of the engine. Therefore, Dongfeng Motor provides a ten-year long warranty for this power system, which reflects the confidence and strength of Dongfeng Motor.

At present, there are only four ways to improve the thermal efficiency of the engine: one is to improve the compression ratio of the engine and provide a good combustion environment; The second is to improve the combustion efficiency of fuel and maximize energy conversion. Third, do a good job in thermal management of all aspects of the engine and optimize the energy loss channel of the engine as much as possible; Fourth, deep antifriction technology can improve the working efficiency and energy optimization of the engine.

Car companies all over the world have their own specialties and exclusive technology accumulation. At present, Mazda Chuangchi blue sky compression ignition engine has the highest thermal efficiency, and its thermal efficiency has reached more than 50%. No one can match it. Standing on the top of the cold mountain, I looked down at the boundless beings.

In China, Changan's Blue Whale Engine, SAIC's Blue Core Engine and FAW's CA series engines, together with Chery, BYD, Great Wall and other powerful manufacturers, have propped up the pace of domestic engine industry and R&D, and once again proved their strength for China manufacturing and China R&D.

That is, a few days ago, GAC Chuanqi broke the ranking list of the highest thermal efficiency of domestic engines, and the fourth-generation 2.0ATK engine independently developed by GAC based on the new G platform won the title of domestic engine with the highest thermal efficiency of 42. 1%, which strongly proved the strength and goal of China's automobile research and development and cleared the name of the strongest domestic independent brand technology!

With strength and technology to maintain domestic independent brands, China automobile enterprises have been able to face difficulties and take the lead. In just a few years, China automobile enterprises have surpassed the world's advanced engine level from scratch, but fortunately, domestic independent brands have suffered, and technical models have been pushed down again and again, achieving overtaking in corners.

Domestic products must be car-scrapping, and only working hard on technology is the most effective way to make domestic independent brands strong.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.