EQH National Series IV includes four types of engines: eqh 140ˇ40, eqh 160ˇ40, eqh 180ˇ40 and EQH 200ˇ40 * *.
EQH engine is a four-stroke, water-cooled, in-line four-cylinder, supercharged, intercooled and electronically controlled * * * rail diesel engine with rated power of 103/2400,18/2400, 132/2400 and/respectively.
Nowadays, people pay more and more attention to environmental protection. How can engines meet people's needs? EQ4H engine, with its advanced technology, fully meets the needs of customers and society for engine environmental protection. In terms of emissions, EQH national 3 series engines mainly adopt internal combustion control technology without post-treatment; Bosch high-voltage rail system is adopted; Adopt waste gas pressure reducing valve supercharger; Technologies such as intake air preheating can be selected to make it meet the third national emission standard stably. The EQH series national IV engine adopts Bosch electronic control system optimized combustion +SCR exhaust aftertreatment system technology to control emissions, which can fully meet the national IV emission standards. In noise control, electronic control pre-injection, rear gear chamber, modal analysis and optimization design of main parts, torsional vibration damper and optional cylinder stiffener are adopted, which makes noise control better than similar products.
Expert comments:
According to the technical director of EQ4H engine, the engine has seven competitive advantages.
1, 140-200 horsepower power coverage to meet the mainstream power demand of medium-tonnage commercial vehicles.
2. Good fuel economy
3. High reliability and durability. The service life of B 10 is 500,000 kilometers.
4. The flexible control function provides a variety of choices for the whole vehicle.
5, low noise, making it easier for the whole vehicle to meet the regulatory requirements.
6. Country 3 emissions, the basic machine and country 4 are on the same platform, which greatly reduces the design changes of emission upgrading.
Fuel saving technology:
In view of the fuel-saving problem that users are particularly concerned about, the reporter made a special inquiry. The technical person in charge of the factory said: This engine adopts ECU computer-controlled fuel injection technology to realize the "automatic" control of the engine on fuel injection, and calibrates the fuel injection with three sets of optimization data, while most domestic similar products only have 1 optimization data. The advantage of this technology is that the fuel injection quantity is very accurate and the fuel injection quantity is the smallest. This not only ensures the driving safety, but also optimizes the fuel economy of the vehicle.
However, the third national aircraft is essentially different from the previous second national aircraft. If users use it improperly, it will be difficult to give full play to the advantages of the three-country machine. To this end, they adopted two means: one is to increase the network of service stations and train the maintenance knowledge related to the three engines. The second is to train consumers in sales and impart relevant control knowledge to ensure the correct use of users.
Expert word of mouth:
Firstly, AVL, an internationally renowned engine consulting company, conducted a comprehensive design review of EQ4H engine. The 4H engine is highly appraised, and its technical indicators are advanced, and its overall design completely conforms to the future design trend, which represents the advanced level of similar engines at present and has the potential to reach the national 4 emission.
Secondly, the test shows that the development of EQ4H engine has reached the expected goal, and its economy and reliability are at the advanced level of similar products in the world.
Product background:
EQ4H engine is a new engine developed by Dongfeng Commercial Vehicle Technology Center with completely independent intellectual property rights, and has the potential to upgrade to National 4. This machine is produced by Dongfeng Commercial Vehicle Engine Factory.
Dongfeng Commercial Vehicle Engine Factory has a history of nearly 40 years, and has accumulated nearly 2.8 million engines manufacturing experience. It is the core power plant of Dongfeng Motor Corporation and the only manufacturer in China that produces a full range of 2- 1 1 liter vehicle engines. The product power covers 90-420 horsepower, and the factory has successively passed ISO9000, TS 16949 quality system certification and ISO 14000 environmental system certification.