Yu Ping, Chairman of Yuchai Group’s Board of Directors, is the first Chinese to fire a counter-balanced diesel engine

Unlike in-line and v-type engines, engine pistons of horizontally opposed engines are evenly distributed on both sides of the crankshaft. The overall height of the engine is reduced, the length is shortened, the center of gravity of the vehicle is reduced, the vehicle travels more smoothly, the engine is mounted on the center line of the vehicle, the moment generated by the pistons on both sides cancel each other, and the vibration of the vehicle during driving is greatly reduced. Make the engine speed greatly improved and reduce noise.

It has these advantages:

Low center of gravity: The lateral vibration produced is easily absorbed by the bracket, which effectively reduces the weight of the heavy engine of the entire vehicle, making it easier to achieve overall balance.

Low vibration: The balance of the piston movement is good (offset by about 180 degrees). Compared to in-line engines, the balance weight factors required on the crankshaft are reduced, which helps increase the speed. It can maintain a low speed of 650 rpm and ensure the smooth operation of the engine. It also has the lowest fuel consumption compared to other engines.

Such a good technology is not used by many people because it has strict requirements on the design and production processes of various parts of the engine, and it also puts forward higher requirements on the engine lubrication system. Subaru uses this engine. Yuchai's engine breaks the cylinder block and cylinder head layout of a conventional diesel engine, applies a variety of latest technologies, eliminates some common and difficult-to-solve problems from the source, and develops a new structure of the engine and mature engine weight for Yuchai. A new window opens.

Yuchai v6 engine

Of course, this magic Yuchai v6 engine is also indispensable.

This is China's first v-type mid-size vehicle diesel engine. It has created a history both in R&D and manufacturing. At present, people still know little about its details, but the scope of technological changes it brings has covered Yuchai's entire R&D, design, and manufacturing processes. The technical experience gained in development and application has become Yuchai's most valuable asset. . It can be foreseen that this mass-produced engine will create more benefits for Yuchai.

As emission standards continue to escalate, people's demand for fuel economy is getting higher and higher, and people are increasingly demanding precise control of the engine. With the development of electronic technology, the engine electronic control technology has gradually matured, becoming one of the engine's core technologies.

It was originally back in 1999 that Yuchai had already started research on engine electronic control technology. In the last century, the electronic control technology of the engine entered the beginning of China's commercial vehicle diesel engine field. The related technology was basically monopolized by foreign suppliers. In order to protect its own maximum benefit, foreign suppliers set a series of restrictions on domestic engine companies, making Domestic engine companies cannot touch their core technologies. All applications, matching, and calibration related to electronic control technologies have to rely on foreign suppliers and pay a huge amount of development costs.

Since 1999, in addition to developing electronically controlled engine products, Yuchai has also devoted itself to the research of electronic control system integration technology, electronically controlled engine calibration technology, and electronic control engine application matching technology, through independent exploration and cooperation with universities and institutions. Exploring and other methods, took the lead in mastering the integrated technology, calibration technology, and application matching technology of electronically controlled engines, breaking the technology monopoly of foreign suppliers at one stroke, and reducing the original 10 million-level development costs to millions, 100,000, or even free of charge.

With the deepening of the research on electronic control technology, Yuchai has not been satisfied with the research on the calibration technology and application matching technology of electronically controlled engines, and began to study controllers, especially the development of controller software. The controller is the core of the electronic control system and is equivalent to the command system of the electronic control system. Having mastered the control strategy, it has the autonomy of the electronic control system matching and application.

In addition, in the research of the electronic control system integration technology, Yuchai is no longer simply applying the packaging scheme provided by the supplier to the engine, and starts the design and selection of independent components, and independently integrates the development of the entire system. The selection of technical solutions and system components has full discourse power, decision-making power and initiative.

YCDCU

At present, Yuchai independently develops a diesel engine controller YCECU, an SCR post-processing controller YCDCU, and a natural gas engine controller YCGCU, which have completely independent intellectual property rights and are more suitable for China's national conditions, and have been put on the market.

In addition, the commercialization of plug-in hybrid and vehicle networking projects has also led Yuchai to master the electronic control technology of the engine.

R & D results such as this, as well as the development and application of Euro 6 diesel engines, YC6K R & D and applications, and so on.

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