"Yang Shao, this engine is already available in Europe, but not in Huaxia at present. We have done a lot of work on this, in the piston, piston rings, etc., intake pipes, fuel high-pressure atomization and air mixture, ignition time and other aspects of the research and improvement, as well as lightweight, in terms of domestic engines, all right is the previous one, only the German Volkswagen thermal efficiency may be 30, our thermal efficiency is 29.1, not much worse. ”

Hong Lei said with some excitement.

From the beginning of the sixties to the present, the thermal efficiency ratio of the internal combustion engine has almost stopped, and few engines have exceeded 30, and after entering the 2000s, the engine technology has made a breakthrough again, and the three-cylinder and four-cylinder engines have also begun to become popular, and the turbocharging technology has also been popularized.

Before Yang Jie's rebirth, the 2.5L engine with a thermal efficiency of 41% in the Japanese car camp had been fully mass-produced and installed in the production car.

This is directly reflected in the fact that the engines have improved by leaps and bounds in power and torque at close displacements, and the new engines are not only more powerful, but also more economical.

This is also the reason why luxury models later emerged and abandoned large-displacement self-priming engines such as V6 and V8 and began to apply four-cylinder engines.

Now the second-generation engine developed by Zhongyuan Automobile Company has entered the testing stage, in recent years, Zhongyuan Automobile Company has also established R&D centers in Sweden, Germany and Japan, and the R&D headquarters of Zhongyuan Automobile Company is responsible for the design, development and verification of all its drive systems, including engine, gearbox, chassis, electrification system, fuel cell system, With more than 4,600 employees worldwide, R&D investment in the past four years has totaled $2 billion, especially in the past two years, and is expected to reach $1 billion this year.

The R&D part of the funds is independently accounted for, and will not crowd out the funds of Zhongyuan Automobile Company itself, and the funds are borrowed from Guanghua Bank.

Compared with the aero engine for more than ten years, the research and development cycle of automobile engine is four years, and the generation of engine can be used for at least ten years.

At present, Yangcheng Automobile Group Company and Qiongzhou Automobile Group Company are based on the engine of Zhongyuan Automobile Company, and the engine output of Zhongyuan Automobile Company in previous years was 1.2 million units, and it is expected to reach 1.5 million units in a few years.

This year's powertrain revenue alone can reach more than 16 billion, with the rise of domestic automobile production and sales, Yang Jie is not worried about recovering the cost of research and development.

For the engine, any part is very important, for example, the biggest skill highlight of the engine of Zhongyuan Automobile Company is the high-pressure double injection technology, this injector is very important, related to the most core skills, and another core skill is the lean combustion technology.

Although this technique Honda and Toyota were first proposed in the sixties and seventies, many other companies are also following up, although the principle is not very profound, the difficulty is reflected in how to make it, which involves a large number of systems, such as the control of fuel injection volume, the control of air intake, the control of ignition time, the redesign of spark plugs and the design of high-voltage circuits, involving the whole body, requiring many mathematicians to establish mathematical models and simulation studies of the engine.

To this end, Zhongyuan Automobile Company has also recruited technical experts in this area from several domestic colleges and universities, and has established a lot of mathematical models and simulation experiments for the engines developed by the company.

In addition to the core skills, the same intake manifold, combustion chamber, block, cylinder head are also very important, a good engine must first have no shortcomings, and then make the longboard more obvious, this is the most important.

Zhongyuan Automobile Co., Ltd. has established a complete development process under the sponsorship of foreign automobile research and production management teams, and at the time of initial design, these design and release engineers are based on foreign senior engineers, who are familiar with every part, from the concept, prototype, and every process and link of mass production parts.

These people are also called parts parents, and parts are their children, parts as children, and children in life are different, because from the time of the project, these children should be clear at each node, and the pregnancy test for pregnant women is almost the same, but it is more troublesome than a pregnancy test, which lasts for several years.

An engine often has hundreds of parts, which requires a large number of engineers, how to make the R&D center of Zhongyuan Automobile Company at home and abroad how to divide labor, carry out the corresponding parts development, design drawings, parts trial production, parts experiments, etc., the harmonious governance in this is also forced to explore the R & D part to explore and establish a set of division of labor R & D system, a few years down finally out of a way.

For this reason, Zhongyuan Automobile Company also has to pay tens of millions of dollars in tuition, but the effect is also very obvious.

In order to ensure the performance reliability of the design, Zhongyuan Automobile Company has carried out more than 1,000 rounds of CAE virtual simulation analysis of the engine, which includes the design of the three-dimensional model, finite element analysis, and the completion of the analysis report.

A large number of expert engineers fully verified the deliverables in the previous round to ensure that the current round of R&D input was correct, and there were also quarrels and discussions in between, and it was with this process that the engine design problems were nipped in the bud.

Another important aspect is experimental verification, many parts in the design drawings after the trial production process has been carried out a large number of experimental verification, after the engine is completed design and production to assemble a batch of samples will continue to do experiments.

The two engines developed in previous years are now installed on the vehicle, and the experiments of high cold, high temperature and plateau have been carried out in Heihe, Qiongzhou, Dunhuang and Nyingchi to continuously create problems and accumulate data.

In these research and development processes, Zhongyuan Automobile Company has set the standard very high, and the engine alone adopts 7 engine durability tests, which must reach 2.4 million kilometers, 15 years of application life, 7.35 million starts and stops, and a total cumulative test mileage of more than 5.98 million kilometers.

One rotation of the earth along the equator is 40,000 kilometers, and the 2.4 million kilometers of conventional durability experiments of Zhongyuan Automobile Company's engine mean that a car equipped with this engine can make 60 revolutions around the earth along the equator.

For Yang Jie's harsh request, many domestic engineers were resistant at the beginning, but Li Jianfeng was also forced to go down, and now the company's engineering skills are used to it.

The design and development are in place, and the quality control of production is also racking brains.

The production engineer and the release design engineer also often quarrel, these parts parents are looking forward to seeing their children have a good home, and then try to progress the request, while the production engineer has to consider the cost, production quality assurance and other aspects, but also consider the transportation of parts into the factory, the transportation of the production is completed, so whenever an engine has just started to be produced, the parts parent officer and the production engineer will always stay in the production line, which is also a very hard thing.

In order to ensure that the equipment meets the requirements of micron-level processing and assembly accuracy of engine machining parts, the engine assembly plant of Zhongyuan Automobile Company adopts high-precision five-axis linkage machining center and robot, and the uniform automation rate of processing line equipment is as high as 60%, so as to avoid the shortcomings of human error and escort the production of high-quality products, and the workshop is kept at a very suitable temperature all year round.

In terms of quality control, the whole line uses advanced measuring instruments, such as the three coordinates of Chase and Hexagon, electronic harmony dynamic inspection tools, etc., and all measurement data are uploaded to the server for storage, which is convenient for query and traceability on the one hand, and lays the foundation for quality guessing of big data in the future.

On the other hand, Zhongyuan Automobile Co., Ltd. is also supported by these perfect overseas suppliers, and cooperates with Bosch, Schaeffler, BorgWarner, Denso, Mitsubishi, Leiden, Valeo and other world-famous advanced suppliers of parts.

After Zhongyuan Automobile Co., Ltd. decided on its own design plan, it supplied the parts and components required for its own design to these parts for customized procurement, purchased timing chains from BorgWarner, customized pendulum dual-mass flywheels from Valeo, customized turbochargers from Mitsubishi, and customized generator decoupling shock absorbers from Leiden.

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