The hottest Nissan two liter engine sets a new sta

Nissan two liter engine sets a new standard for fuel economy

Nissan two liter engine sets a new standard for fuel economy

China Construction machinery information

Guide: high horsepower, good flexibility, low noise when running according to the established operation plan and more economical. The power performance of diesel engine is equal to that of gasoline engine, and in terms of fuel economy, The fuel economy of diesel engine is obviously superior to that of spark ignition engine. Launched by Gr jointly developed by Renault and Nissan

7-bit accuracy, high horsepower, good flexibility, low operating noise and more economical - the power performance of diesel engines is comparable to that of gasoline engines. Moreover, in terms of fuel economy, diesel engines have obvious advantages over spark ignition engines

the GR engine jointly developed by Renault and Nissan is a 4-cylinder engine with a displacement of 1995cc, equipped with 16 air valves, a cylinder diameter of 84mm, a stroke of 90, and a compression ratio of 16:1. This engine has two models, with power of 110 kW and 127 kW respectively. Both engines are equipped with 6-speed manual transmission, and the gear ratio varies with different models

the 110 kW engine installed on the Reno megana mini car is one of the most efficient models in class C vehicles. The speed is 2000:pm, and the maximum torque is 34onm2 Check whether the emergency stop switch is screwed up;. The fuel consumption per hundred kilometers is 54 liters, and the carbon dioxide emission is only 144 grams/kilometer

of course, nitrogen oxides and particulate matter are the main pollutants for diesel engines. To reduce the emissions of these two pollutants, it is necessary to carefully optimize the air-fuel ratio and fuel injection. The application of a complete set of technologies on this engine ensures that its emissions can meet the European No. 4 standard

in order to reduce the pollution from the source, part of the exhaust gas immediately flows back from the combustion chamber and is injected into the intake pipe again. The electronic engine management system changes the amount of exhaust gas recirculation by controlling valves according to different engine parameters. There is also an intercooler to control the temperature of the recirculated exhaust gas

127 kW engines are also equipped with renewable particulate filters. It can remove the soot particles in the exhaust gas. When the filter overflows, the engine will restart the regeneration cycle. The regeneration cycle needs to be carried out every 500 to 1000 kilometers for about 20 minutes. During this period, the exhaust gas is heated by the second post injection. When the temperature reaches above 570 ℃, the soot accumulated in the filter begins to oxidize and then is removed. In this way, the filter is clean again, and the soot particles can be filtered again

127 kW engine is installed on Laguna series cars, and its power is the top among D-class cars. The maximum torque is 360nm, which can be obtained in the range of 1750 '300orpm

common rail fuel system, variable geometry turbocharger and piezoelectric injector ensure such high performance. But also to ensure that the engine noise level is appropriate, which is a very serious technical challenge

the common rail injector injects fuel through 4 air valves of each cylinder at the injection pressure of 1600 atmospheres to obtain better air/fuel mixing. The system adopts the piezoelectric injector provided by Bosch. This injector is more accurate and 4 times faster than the solenoid injector

the speed of the injector is sufficient to inject fuel five times in an ignition cycle. Through two pre injection and slow combustion, the voice characteristics of the above actions can be improved if they can be achieved before hanging the mold, and the possibility of engine knocking can be reduced. The main injection generates torque and power: the first post injection can burn part of the soot, and the second time is used to regenerate the particulate filter

the intake and exhaust ports are opposite to each other on the cylinder head, so each camshaft can control the intake valve and exhaust valve at the same time. Because there are air inlets on each side of the cylinder and different angles of entry into the combustion chamber, double vortices are generated. As a result, the inflation capacity and scavenging capacity of the air inlet are enhanced

controlling noise level is a priority in the design process. The engine adopts deep skirt cast iron cylinder block and aluminum alloy bearing bracket ladder, which can absorb vibration

127 kW engine is also equipped with double balance shafts, which can balance the vibration generated when the engine rotates, especially at high engine speed

the dual mass damping flywheel can act as a sound filter and can offset the influence of small speed changes during normal engine operation. The flywheel has a mass with springs between the engine and the clutch. It can filter out the discontinuous movement of the crankshaft at low speed

the gearbox can also reduce the noise of the transmission system. The 3-axis 6-speed transmission adopts a pressure cast aluminum alloy shell to reduce the weight. The curved gearbox housing is closer to the shaft and gear, which reduces resonance. Renault and Nissan invested a total of 500million euros (48.7 billion yuan) to develop the engine, of which 200million euros (19.5 billion yuan) were used for product and process design. Industrial Development accounted for 2.5 billion euros (24.4 billion yuan). Equipment from suppliers accounted for 50million euros (48.7 billion yuan)

engines are manufactured in CL Ru n factory in France, where the output of power train accounts for 40% of Renault and Nissan. Last year, the factory produced 780000 engines and 880000 transmissions