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What limits the speed of the diesel engine
- Categories:Industry News
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- Time of issue:2022-09-30 11:44
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(Summary description)The conclusion is that the viscosity of diesel oil is high, and it can not be mixed with air in a short time. Diesel fuel contains more carbon and burns more slowly. Therefore, restricted by the inherent conditions of slow mixing and slow combustion, if the speed of the diesel engine is too high, the mixture concentration will soar rapidly and eventually lead to misfire In fact, this problem should be viewed from two perspectives: the large displacement heavy-duty diesel engines used in commercial vehicles and tool vehicles, and the light diesel engines used in passenger vehicles, such as Volkswagen TDI models and PSA HDI models, can reach 5000 rpm, and the fuel cut-off speed is around 5500 rpm. In fact, the fuel cut-off speed of today's turbocharged gasoline engines is mostly around 6000 rpm. Therefore, in the field of passenger cars, the speed of the diesel engine is not low, which can also be understood that the speed of the diesel engine and the gasoline engine in the field of passenger cars is very close. However, for heavy diesel engines with large displacement, the dead weight of the piston, connecting rod, crankshaft and other components is too high, and the moment of inertia generated when the machine is running is too large, so it is impossible for the engine to rotate fast. If it does, the engine body cannot bear it. This is the problem faced by those heavy internal combustion engines with large displacement. Even the gasoline engine can not turn too fast in fact. The difference between demand and use is caused.
What limits the speed of the diesel engine
(Summary description)The conclusion is that the viscosity of diesel oil is high, and it can not be mixed with air in a short time. Diesel fuel contains more carbon and burns more slowly. Therefore, restricted by the inherent conditions of slow mixing and slow combustion, if the speed of the diesel engine is too high, the mixture concentration will soar rapidly and eventually lead to misfire
In fact, this problem should be viewed from two perspectives: the large displacement heavy-duty diesel engines used in commercial vehicles and tool vehicles, and the light diesel engines used in passenger vehicles, such as Volkswagen TDI models and PSA HDI models, can reach 5000 rpm, and the fuel cut-off speed is around 5500 rpm. In fact, the fuel cut-off speed of today's turbocharged gasoline engines is mostly around 6000 rpm.
Therefore, in the field of passenger cars, the speed of the diesel engine is not low, which can also be understood that the speed of the diesel engine and the gasoline engine in the field of passenger cars is very close. However, for heavy diesel engines with large displacement, the dead weight of the piston, connecting rod, crankshaft and other components is too high, and the moment of inertia generated when the machine is running is too large, so it is impossible for the engine to rotate fast. If it does, the engine body cannot bear it. This is the problem faced by those heavy internal combustion engines with large displacement. Even the gasoline engine can not turn too fast in fact. The difference between demand and use is caused.
- Categories:Industry News
- Author:
- Origin:
- Time of issue:2022-09-30 11:44
- Views:
The conclusion is that the viscosity of diesel oil is high, and it can not be mixed with air in a short time. Diesel fuel contains more carbon and burns more slowly. Therefore, restricted by the inherent conditions of slow mixing and slow combustion, if the speed of the diesel engine is too high, the mixture concentration will soar rapidly and eventually lead to misfire
In fact, this problem should be viewed from two perspectives: the large displacement heavy-duty diesel engines used in commercial vehicles and tool vehicles, and the light diesel engines used in passenger vehicles, such as Volkswagen TDI models and PSA HDI models, can reach 5000 rpm, and the fuel cut-off speed is around 5500 rpm. In fact, the fuel cut-off speed of today's turbocharged gasoline engines is mostly around 6000 rpm.
Therefore, in the field of passenger cars, the speed of the diesel engine is not low, which can also be understood that the speed of the diesel engine and the gasoline engine in the field of passenger cars is very close. However, for heavy diesel engines with large displacement, the dead weight of the piston, connecting rod, crankshaft and other components is too high, and the moment of inertia generated when the machine is running is too large, so it is impossible for the engine to rotate fast. If it does, the engine body cannot bear it. This is the problem faced by those heavy internal combustion engines with large displacement. Even the gasoline engine can not turn too fast in fact. The difference between demand and use is caused.
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