Scope of application:


·It is applicable to high-grade medium bus, high-grade light truck, SUV, pickup truck and off-road vehicle.

Main technical features:


NGD3. Model 0 diesel engine is a new type of diesel engine produced by chaochai company by introducing the technology of MWM engine company, a wholly-owned subsidiary of Wanguo truck and engine company. It is produced on the basis of fully introducing the parts drawings, production process methods, raw material list, test methods and detection standards of MWM company. During the localization development of product parts, MWM will participate in the assessment of the localization of key parts to ensure that the localized parts have the same quality as the imported parts.


NGD3. 0-cs5 series products are imported from Wanguo company ngd3 The upgraded products developed on the basis of model 0 diesel engine are under the positive development guidance of Isuzu diesel engine experts in Japan, and realize the upgrading of power, economy and reliability on the basis of inheriting the excellent performance and characteristics of the original engine. The machine adopts advanced designs such as four valve aluminum cylinder head, overhead camshaft, overhead camshaft mechanism with roller rocker arm and hydraulic adjustment valve, chain drive and so on. It is the preferred power for users.


Chaochai NGD national VI diesel engine development adopts the mainstream technical route of Cooled-EGR + doc + DPF + SCR, active regeneration of DPF under all working conditions and other technical routes, and uses Bosch 1800bar injection system to make ngd3 0 engine emissions upgraded to national VI. By strengthening the design of structural parts such as engine body, cylinder head, crankshaft and connecting rod, the power performance is greatly increased while the emission is upgraded. Equipped with chaochai ngd3 The 7-meter Jianghuai China bus with 0 engine has become the first choice for party and state leaders to travel, and it is also a sign to verify the high performance and high reliability of engine products. Designated vehicles for the commemoration of the "National Memorial Day" in 2014 and 2015; In September 2015, "70th anniversary of the victory of the Anti Japanese War" military parade ceremony, "Anti Japanese War veterans" and "Anti Japanese War Model" team vehicles; It has been permanently collected by the military museum; Designated vehicles for service guarantee of the 11th Hangzhou G20 summit in 2016.



1. High reliability


● the overhead camshaft mechanism has small motion quality and large mechanism stiffness, which is more suitable for the needs of high-speed operation of the engine and has high reliability.


● the roller rocker arm can make the wear of relevant friction pairs uniform, so as to ensure the consistency of the operation of each valve.


● expansion and breaking process connecting rod, with higher reliability.


● the compact high hardness crankshaft has high working reliability while reducing the overall size of the engine.


● excellent durability and reliability, successfully passed the 1000 hour full speed and full load test, 1000 hour mixed load test, 1000 over oil supply test, 400 hour robustness test, 400 hour high-speed repeated test, 100 hour ultra-high temperature test, 200 hour ultra-high speed reliability test, 300 hour cold and hot shock test, 300 hour over explosion pressure test, 70000 km road test of the whole vehicle, etc.


● compatibility and adaptability with the whole vehicle in extremely cold (- 35 °), plateau (5000m) and high heat (45 °).


2. Low noise


● adopt low friction design technology to improve the mechanical efficiency of the engine and reduce friction loss. With roller rocker arm and overhead camshaft mechanism, reduce the friction between roller and cam and reduce the motion quality; The structure of automatic compensation hydraulic adjustment valve is adopted to realize valve clearance free operation, after-sales valve clearance maintenance free and reduce noise; Using chain transmission technology, the noise and friction are greatly reduced.


● Bosch injection system is adopted to realize multiple injection, accurate control of injection quantity and injection time, and reduce combustion noise.


3. Ultra low emission


● the efficient integrated intake system can effectively reduce the resistance of the intake system, organize the airflow pattern conducive to full combustion and reduce engine emissions.


● the four valve structure is adopted to increase the intake flow area, increase the intake volume, improve the inflation efficiency of the engine, and reduce the throttling loss of the valve distribution system, so as to improve the maximum power and power rise of the engine.


● the central injector arranged vertically makes the air and fuel mix evenly, which is conducive to the combustion quality of mixed steam and reduce harmful emissions.


4. Low fuel consumption and high power


● high pressure common rail technology is adopted to reduce the combustion noise and vibration of the engine through multiple injection and accurate control of fuel injection quantity and injection time, so as to fully burn the fuel and reduce fuel consumption. Compared with domestic diesel engines of the same level, it has the characteristics of the highest output power, large torque, low fuel consumption and low noise.


● "air storage box type" intake pipe makes the ordinary supercharger have the characteristics of VNT supercharger. Because it has similar "constant pressure" function, the engine accelerates quickly during operation, which overcomes the defect of "lag" in the acceleration of supercharged diesel engine; At the same time, it also enables the machine to have a very wide operating speed range (from 800-4250r / min). While running at high speed and saving oil, it also maintains low speed and high torque.


● the efficient integrated intake system can effectively reduce the resistance of the intake system and organize the air flow pattern of full combustion, which is conducive to reducing the fuel consumption and emission of the engine.


● adopt the four valve and overhead camshaft structure to increase the intake flow area, increase the intake volume, improve the inflation efficiency of the engine, and reduce the throttling loss of the valve distribution system, so as to make the combustion more sufficient, reduce the fuel consumption and improve the power of the engine.


5. Convenient maintenance


● humanistic design, high universality of parts and good proximity.



Product parameters:


NGD3.0-cs5 National V parameters of  series: 

 NGD3.0-CS6Series VI parameters：
 

Product parameters：