Is a gasoline-electric hybrid really that fuel-efficient?

Whether a gasoline-electric hybrid saves fuel or not? Judging from my own car driving experience, it is generally more fuel-efficient than traditional power, but this fuel saving is more reflected in urban driving. , that is to say, the fuel consumption when driving in the city is lower than that on the highway. When I drive a Ralink hybrid, the long-term fuel consumption display is 3.8 liters to 4.2 liters per 100 kilometers. When I drive a friend's hybrid CRV, the long-term fuel consumption display is no It is 5.2 liters per 100 kilometers.

If you drive at high speed for a long time or the vehicle is mostly used for high speed, then the advantages of gasoline-electric hybrid power will not be obvious. This is because a gasoline-electric hybrid car requires the braking process of the vehicle to collect energy to charge the battery. If it is maintained at high-speed cruising, the battery cannot be charged in time, or it must be charged by the operation of the engine.

In this case, the power generated by the engine energy is consumed and then applied to the wheels. After two energy conversions, there is actually no advantage.

The principle of fuel-saving in gasoline-electric hybrid vehicles

When driving in urban areas, the process of fuel-saving in gasoline-electric hybrid vehicles is more obvious. Every time the brakes are applied, the instrument panel will display charging. The greater the braking force, the higher the charging percentage. Then when the car stops, the engine stops running.

This stop operation is different from the automatic start-stop system. When the automatic start-stop system is turned off, the air conditioner cannot operate, but in a gasoline-electric hybrid car, the air conditioner also operates when the engine stops running. Because most of the air-conditioning pumps equipped in gasoline-electric hybrid vehicles are electronic air-conditioning pumps.

When the vehicle starts moving, the engine is not running, but is driven by the motor. When the accelerator pedal is pressed deeply and power is needed, or the battery power is low. When the vehicle is running, the engine intervenes in driving and generating electricity, so that the vehicle's kinetic energy can be maximized, thereby reducing fuel consumption.

As far as my personal feeling is concerned, hybrid cars actually recycle the energy in the vehicle's normal motion state, thereby reducing the overall energy consumption, which is directly reflected in the reduction of the vehicle's fuel consumption;< /p>

During the operation of the vehicle, the braking process converts kinetic energy into heat energy on the brake disc. The hybrid system can convert this energy into electrical energy and store it, which can be called at any time when needed.