Performance characteristics of diesel engines
Apr 08,2026
High thermal efficiency: Diesel engines have a high compression ratio (usually between 15-22), resulting in high thermal efficiency and energy conversion rate, which can effectively save energy. The thermal efficiency of a typical diesel engine is 30% -40%, which is higher than the 20% -30% of a gasoline engine.
High torque: Diesel engines generally have high torque and are suitable for heavy-duty and high-speed vehicles.
Good economy: The price of diesel is relatively low, and the fuel consumption rate of diesel engines is about 30% lower than that of gasoline engines, so it has good economic benefits in terms of operating costs.
Strong power output: Diesel engines have good power output characteristics and can provide a large power output.
Less faults: The diesel engine has no ignition system, works reliably, and has a relatively low failure rate.
Low emission pollution: Diesel engines have sufficient air supply and produce much less CO and HC after combustion compared to gasoline engines, but produce more nitrogen oxides and soot. However, with the continuous advancement of emission control technology, the emission performance of modern diesel engines has been significantly improved.
Widely applicable temperature range: Diesel engines can operate normally in low-temperature environments and have strong adaptability.
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