Electronic control technology is the only way to achieve higher emissions of the engine
At the 62nd International Commercial Vehicles Exhibition held in Hanover, Germany in September this year, major European truck manufacturers MAN, VOLVO, Scania and others exhibited engine technologies that met Euro V emission standards, mainly in electronic control. On the basis of technologies such as common rail and electronically controlled monomer pump, tail gas aftertreatment technologies such as EGR and SCR are used.
All of these provide technical assurance for European trucks to achieve higher emission standards.
China's emission regulations basically draw on European systems and standards. At present, Europe is implementing Euro IV emission standards and will implement Euro V in 2009. With reference to the timetable for the implementation of the European emission standards, it may take only about three years for China to upgrade from State III to State IV. This poses high requirements for China's vehicle manufacturers. Because European trucks from the Euro II to Euro III upgrade process, based on the original vehicle mechanics technology, they integrate electronic and electronic control technology; this is revolutionary compared to the post-processing technology used in the process of continuing upgrades. The significance of innovation.
The national engine that provides a reasonable technical route is the corporate social responsibility
The introduction of electronic and electronic control technologies has brought changes to all aspects of the truck's production and use chain, including management methods, driving methods, maintenance methods, profit models, etc. China's truck manufacturers and users are experiencing this The process.
At present, China's truck companies use electronically controlled engines in the country's three technologies, including electronically controlled high pressure common rails, electronically controlled pump nozzles, and electronically controlled monomer pumps. Taking liberation trucks as an example, the trucks provided by the Liberation Company that can meet the country's three emission standards are equipped with engines produced by the group's enterprises, Wuxi Diesel Engine Co., Ltd. and Dalian Diesel Engine Co., Ltd., which are produced by the company. The main model of the truck is Dachai Road. The Cz motor and Xichai 6DL series; the former uses electronically controlled monomer pump technology, the latter uses electronically controlled common rail technology. Compared with the former National Second Vehicle, the National Three Vehicles upgraded the engine's fuel injection system, the engine body was unchanged, the previous mechanical control injection pump was eliminated, and the computer-controlled common rail or single pump was used.
Common rail refers to that after the ECU calculates the fuel injection quantity accurately, the same quality and the same pressure of fuel oil are simultaneously provided to each fuel injector through the common oil supply pipe, so that the engine operation is smoother, thereby optimizing the overall performance of the diesel engine. The most important feature is to separate the fuel pressure generation from the fuel injection and achieve precise control of the oil pressure in the common rail, so that the pressure of the high pressure tubing is independent of the engine speed.
The electronic unit pump injection system is a high-pressure oil supply control device that sends commands through an electronic control unit (ECU) to control high-speed solenoid valves and precisely controls fuel injection timing and regularity according to diesel engine operating conditions to improve its overall performance index.
With diesel engines with electronically controlled common-rail and single-pump technology, the fuel injection pressure can reach over 140 MPa, and the atomization effect is better and combustion is more complete. Under the same horsepower of the engine, the power performance of the country's three products has increased significantly compared with that of the country. The CA6DL engine's low-speed torque and maximum torque have increased by 23% and 13% respectively.
New Technologies Will Bring New Profit Models to Users Forming New Habits for Buying Cars
After the implementation of the National Three Regulations, many companies have introduced the National Three Trucks, but many users do not know how to pick trucks, especially what kind of technology is suitable for them. This requires companies to introduce more technical knowledge to users in the process of product promotion. The training of users' drivers focuses on practicality and tries to reduce the risks of users.
For example, the electronic control system of the three vehicles of the Liberation State has a self-diagnosis function. When a slight fault occurs in the electronic control system, the vehicle automatically reads the fault information through the CAN meter, and the user can perform simple troubleshooting based on the fault code distribution table provided with the vehicle to reduce the time of work loss, worry and efficiency.
For another example, Guosan Trucks requires the driver to go to a regular gas station to refuel, and pay attention to the fuel gauge to indicate timely refueling. Because the National III vehicle model requires the fuel supply system to increase the amount of fuel in and out, the amount of oil remaining in the fuel tank is too small, and the engine may be turned off due to air intake and it is difficult to start it again.
If users have fully understood these common-sense considerations before buying a car, they will get good results. There is a user Zhang master, he has three cars, one of which is the CA4203 tractor that was purchased on May 13, 2008, matching the Deutz 280-horsepower three-country engine, mainly used to pull coal from Feicheng to Laizhou, and then from Laizhou. Picking returns to Feicheng. At present, it has traveled 54,000 kilometers, with a coal load of 40 tons and a return delivery of about 35 tons. Since the date of purchase, it has never been serviced in addition to normal maintenance. Thanks to the realization of high-efficiency cargo transportation, Master Zhang's car is extremely sought after by the owner, and the supply has been very good. His evaluation is that the Deutz engine is the most fuel-efficient among the three engines. The average fuel consumption per 100 kilometers is 2-3 liters less than that of the other two brands with the same power. Master Zhang said: "In the future, we must first consider the liberation of Deutz products."
Practice is the sole criterion for testing truth. Users want to make money is the last word, and energy-saving emission reduction is also an inevitable trend of economic development. Under the premise of satisfying energy-saving and emission-reduction and creating more benefits for users, it will win users' word-of-mouth. If it is formed into a mode of transportation, it will bring profits to more people, thereby improving the user's upgrading of technical requirements for vehicle products.
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