The effect of the engine backup power of the car on the power and fuel economy of the car

The maximum power of the engine is generally followed by a speed value such as 125kw 6000rpm (rpm ) means that the maximum power of the engine is 125kw, which occurs at 6000rpm. The higher the maximum power, the greater the maximum speed of the engine, and the power affects the speed. In fact, the smaller the speed, the better, the most commonly used speed of the car is generally within 3000 rpm, so the chance of the maximum power at 6000 rpm can be fully exerted is very small.

In fact, the power and fuel economy of the car are also affected by the torque value of the engine, which is generally stated that 220nm 4000rpm also has a speed value, and the lower the speed, the better. Torque affects the car's performance such as climbing and acceleration. Therefore, at the same power, choose an engine with a low rev value, the power and fuel economy will be better!

Hope it helps.

The increase of the speed ratio of the reducer decreases the vehicle speed corresponding to the same engine speed, and the power curve in the power balance diagram shifts to the left in the speed axis, so that the reserve power increases, the power is improved, and the fuel economy decreases. On the contrary, the backup power is reduced, the power is reduced, and the fuel economy is improved. The automobile engine is the engine that provides power for the car, and it is the heart of the car, which affects the power, economy and environmental protection of the car. According to different power**, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids.

Common gasoline engines and diesel engines belong to reciprocating piston internal combustion engines, which convert the chemical energy of fuel into mechanical energy of piston movement and output power to the outside world. The gasoline engine has high speed, small quality, low noise, easy starting, and low manufacturing cost; The diesel engine has a large compression ratio, high thermal efficiency, and better economic performance and emission performance than the gasoline engine. In addition to the use of gasoline and diesel, vehicles that use other new energy sources are called new energy vehicles, including pure electric vehicles, hybrid electric vehicles, fuel cell vehicles, gas vehicles, bioethanol biodiesel vehicles, and hydrogen-powered vehicles.

Most of the new energy vehicles on sale in the Chinese market are hybrid vehicles, but at present, pure electric vehicles have been taken as the main direction.

The effects are as follows:

The higher the backup power of the car, the better the power of the car. The back-up power can also be used to determine the car's climb and acceleration. The power balance chart can also be used to analyze the engine load rate of the car while driving, which is beneficial for analyzing the fuel economy of the car.

The smaller the backup power, the better the fuel economy of the car.

Usually when the reserve power is about 10 20, the fuel economy of the car is the best. However, too little backup power will cause the engine to often work at full load, which is not conducive to improving the fuel economy of the vehicle.

Car backup power

The car backup power reflects the car's climbing and acceleration performance, and the greater the car's backup power, the better the car's power. The backup power can be used to specifically determine the gradeability or acceleration of the car.

Backup power: reflects the car's climbing and acceleration performance. The difference between the maximum amount of power a car can emit in a certain gear and the amount of power required in that gear.

This difference will change from time to time depending on the operating condition of the car, because the road conditions, loads and other related factors will change with the operation of the car.

In general, the engine power required to maintain the constant speed of the car is not large, the engine throttle opening is small, when it is necessary to climb or accelerate, the driver increases the throttle opening, and all or part of the car's backup power plays a role. Therefore, the greater the backup power of the car, the better the power of the car. The backup power can be used to specifically determine the gradeability or acceleration of the car.

Powerful cars often have large displacement, high power and high torque, so they give people the illusion that displacement is proportional to power, but this is not necessarily the case. The engine displacement is large, the power is not necessarily large, which involves the problem of liter power (average power per liter displacement kw l), and the liter power is to be improved by engine technology, in other words, to make the car power good, fast, in addition to increasing displacement, but also through the lifting technology to increase power and torque.

It is related to the displacement of the engine as well as the quality of the oil. The larger the displacement engine, the stronger its power output will be.

It is directly related to the engine, the higher the engine displacement, the higher the power performance of the car, and the lower the displacement, the worse the performance