中國(guó)重汽天然氣發(fā)動(dòng)機(jī)培訓(xùn)(部分 英文)

1、2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,1,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,2,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,3,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,4,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,5,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,6,中國(guó)重汽天然氣發(fā)動(dòng)機(jī)培訓(xùn)教材The training of CNHTCs natural gas engines,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,7,42、64、84 Wheel base 3800mm-4600mm,WT615 engine 230PS-340PS HW13710,High-pressure c

2、ylinders group 480L(R/L)+4120L(B) Trip range mileage 300km 480L+4140L 330km 480L+8140L 530km,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,8,4 tanks 8 tanks,CNG Tractor,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,9,Light side,Right side,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,10,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,11,Control system,Inflation port,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,12,CNG 84,CN

3、G Dumper,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,13,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,14,CNG 84,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,15,LNG Tractor,LNG S38 Tractor,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,16,LNG（B）,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,17,LNG (R/L),2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,18,Gasification device,LNG,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,19,LNG (L),2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,20,LNG Dumper,84,6

4、4,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,21,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,22,LNG chassis,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,23,1.CNHTCs natural gas engines,CNHTCs natural gas engines, it is CNHTCs fully implement for international strategy, and to further improve the enterprises independent innovation ability and the core competitive power

5、, bigger and stronger CNHTCs power enterprise, according to the market demand at home and abroad and heavy truck technologys development trend, in the original WD615 engines ,on the basis of series diesel engine to design the gas engine. At present, the natural gas engines power is cover 230 Hp to 3

6、40 Hp, and it can fully satisfy the medium, heavy vehicles and various types of airbus supporting demand.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,24,CNHTCs natural gas engines main fittings choose international brand or domestic top-ranking supplier of products, with advanced production technology and equipment safegu

7、ard parts processing and assembly and adjustment quality, and to maintain the diesel engine with WD615 countries most parts of the general basis, focusing on into the exhaust system and head, piston, to design for natural gas engine completely the combustion characteristics, the machine performance,

8、 reliability and economic indicators are better than domestic products. Since CNHTCs natural gas engines on the international and domestic market, users receive the wide recognition, industry in natural gas engine market to form their own brand advantages, the 10 liter displacement gas engine techno

9、logy is the most advanced, the quality is most reliable.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,25,2. The advantages of CNHTCs natural gas engines,CNHTCs natural gas engines is with the United States EControls company joint development and design completely with independent intellectual property rights, with a contem

10、porary world advanced level of a new generation of electrical, rareness burning, four valve natural gas engines. More economic WD615 diesel engine parts and versatility, spare parts supply, maintenance, and convenient, and greatly reduce the maintenance costs. Four valve structure design has greatly

11、 increased the the charging efficiency of engines, thin combustion way to make the engine has the very good fuel economy, the lowest gas consumption for 195 g/kw. H, fuel costs is far lower than the diesel engine. E controls system maintenance cost low, Woodward system maintenance cost is high, for

12、example: Woodward nozzle system.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,26,More Reliable Inherited WD615 diesel engine unique a frame structure, high strength reinforced body; Vortex low temperature back; Strict quality management system, main fittings choose international brand or domestic top-ranking suppliers prod

13、ucts, ensure the reliability of the machine. More environmental protection Because of the exhaust of natural engine no particles, so in emission test to measure not exhaust particles, and diesel engine emission test for the exhaust particles have the strict request, through this problem can explain

14、the emission standards under the same natural engines than diesel engine more environmental protection. The complete with independent intellectual property rights reinforcement the body, effectively reduce the vibration and reduce noise. To achieve the four countries emissions.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,

15、27,WT615 series gas engine technology parameters,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,28,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,29,3. WT615 series gas engine main structure,Reinforced wide body ：Inherited British Ricardo company for the country diesel engine design reinforcement wide body and the crankcase, significant strengthening

16、 the engine block of the stiffness and strength, improve the heat load of the engine, greatly improve the engines reliability and service life, and at the same time significantly reduce the vibration and noise.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,30,Four valve structure ：Through the WAVE combustion simulation and

17、CFD fluid dynamics calculation, using four valve into, exhaust systems so that the gas distribution more uniformly, air coefficient, burning more fully, effectively reduce the gas consumption. At the same time four valve structure strong in the middle of the spark plugs of decorate, more benefit at

18、the ignition.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,31,Air intake and increase the middle chamber of the intake pipe ： More suitable for the intake of mixed fuel Gas engine. The increase of chamber should help Reduce air flow pulsation, beneficial to the mix, ping Balance between each cylinder the flow of air.,2020/

19、7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,32,Exhaust manifold (B)： To avoid putting in the open air, each cylinder exhaust back pressure between uniformity of the burning and the consequent deterioration, get through two exhaust passage, so as to minimize exhaust back pressure not uniformity.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,33,4. Gas s

20、upply and ignition the characteristics of the system,ECS Engine Control System Engine control unit ECM use advanced software control electronic throttle and ignition timing. No matter what the condition, for example, high altitude, high temperature or humidity is high, ECM system can make use of the

21、 engine temperature, humidity and the monitoring of atmospheric pressure sensor feedback to the operation of the engine of the numerical value of adjustment, make the engine keep the best performance and fuel economy. High-energy electronic ignition ECM system control is located directly on the spar

22、k plug the high energy ignition coil work, not through any high voltage wires, reduce the energy of the ignition loss, and choose platinum electrode spark plug, extended its service life, increase the combustion efficiency, thus reduce the emissions.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,34,fuel supply Through the r

23、apid reaction pressure regulator and the optimal control of empty fuel mixer, engines get continuous fuel supply to reach optimization, achieve the best fuel economy and the lowest emissions. Slow down off fuel function During deceleration, ECM system to stop supply gas, intelligent control electron

24、ic throttle valve reduce waste gas and put turbocharger speed to get the best fuel economy.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,35,Overspeed protection function When the engine speed than the set speed, the system automatically cut off fuel supplies, make speed down. Adaptive function The exhaust oxygen sensors fo

25、r fuel and oxygen consumption measurement engine provide feedback signal, make the engine has been can continue to adapt to changing conditions, and always maintain the best working condition.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,36,selfdiagnosticfunction Engine management system to provide a full range of standard

26、 diagnostic information J1939, and can occur in many serious problems detected before these problems. Communication ECM system CAN through the CAN bus connections, and CAN be easily obtained other system of vehicles communications.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,37,Natural gas engine control system,2020/7/21,

27、濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,38,Natural gas engine structure control principle diagram,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,39,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,40,ECM,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,41,Electronic throttle,Electronic throttle controller is used to control the air-fuel mixture into the engine of rate, so as to realize the load control and a

28、djustment of the auxiliary function. The characteristics of electronic throttle is fast transient response ability. Can realize in 50 ms open to shut in.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,42,Air/fuel mixer,Mixer for fuel and air mixed, can also will fuel supply pressure, according to the volume of air flow ratio

29、 on fuel measurement.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,43,High power electronic pressure regulators-EPR,High power electronic pressure regulator (HD EPR) through the adjustment of the gas supply pressure to control the mixer engine fuel rate. Engine management system to control the HD EPR fuel delivery, the reg

30、ulator can accurate measurement for fuel, achieve the optimal, the most economic fuel and instantaneous corresponding.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,44,溫度傳感器,基準(zhǔn)壓力口,基準(zhǔn)壓力管路,進(jìn)空氣,混合器,電子節(jié)氣門,至進(jìn)氣歧管,燃料出口,燃料進(jìn)口,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,45,High pressure CNG regulator,High voltage regulator is a mechanical level 2 pressure-

31、relief devices, will the gas supply pressure from CNG 250 bar adjustment to the eight bar. Regulator with a car fuel temperature sensor, when the fuel temperature is below allow limit, used to limit the power of engines to protect the downstream fuel system components.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,46,6.Low

32、pressure fuel cut-off valve,Low pressure fuel cut-off valve effect: the engine when parking will EPR parts and downstream and all of the upper reaches of the fuel pressure blocking to reduce the amount of fuel gathered downstream. Pay attention to low voltage electromagnetic valve assembly direction

33、.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,47,7.TMAP sensor,Turbocharged engine using a sensor to measure temperature and pressure, usually by temperature and intake manifold absolute pressure (TMAP) sensor. TMAP sensors installed in the intake manifold, used to measure the absolute pressure (maximum 300 kPa) and tempe

34、rature of the mixture. From TMAP get temperature information can be used for calculation of the flow temperature correction coefficient.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,48,8. TIP sensor,Compared with naturally aspirated engines, turbocharged using requires a second pressure sensor, used in the calculation of a

35、ir and the measurement of value of mixer inlet pressure (TIP). TIP sensor used for measuring the pressure of the air near the entrance mixer is used to evaluate the exhaust turbine front pressure (PTP) to accurately calculate the airflow value and control turbocharger waste gas door. TIP sensor can

36、help ECM to determine the throttle entrance, the intake manifold and exhaust manifold (vortex front pressure) air pressure. The information was used for pressurization control, throttle control, ignition moment and fuel measurement.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,49,9.The environment temperature and humidity

37、sensor,+ The environment temperature and humidity sensor provide air temperature, humidity, and atmospheric pressure and other information. According to the environment humidity ECM to optimize the ignition moment, fuel supply and supercharged level. Atmospheric pressure and atmospheric temperature

38、feedback signal signal is used to adjust the oxygen sensor readings.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,50,10.The camshaft position sensor (CAM) and crankshaft position (CNP) sensor The crankshaft position sensor provide engine speed information, the camshaft position sensor notice ECM which cylinder in compressi

39、on process, and sent out the ignition time instructions. ECM is just in the combustion cyclic to give the ignition coil power supply.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,51,11. sparking coil ECM system control is located directly on the spark plug the high energy ignition coil, not through any high voltage wires.

40、Change cycle is 60000 kilometers.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,52,12. spark plug High power rareness burning engine necessary voltage can be up to 40 KV or higher, with the passage of time, the spark plug gap will gradually be corrosion and expand. Spark plug should be in first 0.254 0.406 mm. Use a special

41、 tool tear open outfit. CNHTCs factory spark plug for NGK platinum spark plug, type: PFR7B-D. Change cycle is 60000 kilometers.,2020/7/21,濟(jì)南復(fù)強(qiáng)動(dòng)力有限公司,53,13. Waste gas door control valves,Waste gas door control valves as a proportion tee electromechanical electromagnetic valve, adjust the ECM pulse width can realize in any case the precise booster control. This device is equivalent to a single class pressure regulator, used in the waste gas door the implementation of the pressure power control. The pressure sensor to the ECM feedback information, provide the closing the feedback loop control