How to Calculate Horsepower from Diesel Engine Power?

2 Answers
Gavin
07/24/25 4:16am
Diesel engine power of 1kw equals 1.36 horsepower, and you can determine the engine's horsepower using this formula. Here is an extended introduction: 1. Introduction to power: Power is an important performance parameter of an engine. The greater the power, the stronger the engine's performance, and the higher the fuel consumption of the engine. 2. Increasing the power of a diesel engine: Use turbocharging technology. Many automotive diesel engines utilize turbocharging technology. Turbocharging technology can increase the engine's air intake without increasing the engine's displacement. The engine uses a mixture of air and fuel as its fuel. If the air intake is increased and the fuel injection is correspondingly increased, then the amount of fuel in the cylinder can be increased.
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DiJackson
08/10/25 11:52pm
I often encountered this issue when repairing tractor engines before. Actually, converting diesel engine power to horsepower is quite simple. Just multiply the kilowatt value by 1.36 to get the metric horsepower (PS). For example, a 50kW diesel engine equals 68 PS. The imperial horsepower (HP) is slightly more complicated, requiring multiplication by 1.34. In practical use, I've noticed that engine nameplates often list two parameters: one for maximum output power and another for continuous working power. I remember during a test, using a tachometer along with a torque meter, first multiplying torque by speed and then dividing by the constant 9549 to get the kilowatt value, and then converting it to horsepower was more accurate. For regular car owners, simply checking the kW value on the vehicle documents and doing a quick mental calculation is sufficient, especially since many car specification sheets now directly list the horsepower value. Note that the nominal power usually refers to the value at rated speed, and horsepower will decrease at lower speeds.
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