As we all know, the gasoline engine petrol chemical energy into heat energy, then part of the heat energy into mechanical energy is used to drive the vehicle. Modified cars increase horsepower means firstly, to increase the amount of fuel injection, is to improve the efficiency of automobile engines (engine efficiency, the engine efficiency of converting thermal energy into kinetic energy), both a positive and auxiliary means. In fact, heat engine is not a very satisfactory way of working, because a large part of the energy emitted by the form of heat into the air. The rest converted into kinetic energy but also as a generator, hydraulic power agencies, as well as the cooling system and air conditioning equipment to provide power to get that part of the power they need, etc. These devices, and the rest from the crankshaft output is power used to drive the vehicle, most car manufacturers in promoting the nominal dynamic .
The transfer of power is not over yet, from the engine crankshaft to the car's tires ultimately counterproductive to the ground is full of gear and bearing long journey. Imagine, the first clutch or torque converter and gearbox, final drive, differential, axle, and finally to the wheels, the power to the ground by the tire ... in this process, the power because friction loss after these pass final role of power in the ground is that we really can be used to power, power wheel.
So how this really can be used to wheel power measured? The answer is dynamometer! The dynamometer's main purpose is to measure the car wheel output power test car glide performance, test vehicle acceleration performance, check the speedometer, equipped with a fuel consumption meter chassis dynamometer can also simulate the road, measuring fuel consumption constant. So conditional modified car finished their car do not forget measured wheel power Oh, we can engine power increase to the number of ways to improve gearbox, final mechanical energy losses in power transmission will make us feel bad · · · ·
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