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What limits the speed of the diesel engine

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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:
Information

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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Applicable scope of Diesel generator

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Internal structure of Diesel generator

The internal structure of Diesel generator usually includes the following main components: Diesel engine (internal combustion engine): It is the core part of the generator set, used to convert the energy generated by fuel combustion into mechanical energy. It includes components such as cylinders, pistons, crankshafts, connecting rods, etc. Crankcase: used to install the crankshaft and connecting rods, providing support and lubrication for the engine. Piston ring: A circular component located on the piston, used to seal the gap between the piston and the cylinder, preventing high-pressure gas leakage in the combustion chamber. Cylinder and cylinder head: The cylinder is the place where the internal combustion process occurs in the engine, and the cylinder head is used to seal the upper part of the cylinder. Valve and valve drive mechanism: responsible for controlling the intake and exhaust processes, ensuring the inflow of fuel mixture and the discharge of exhaust gases. Fuel system: includes components such as fuel tank, fuel filter, fuel pump, and fuel injector, used to supply fuel to the combustion chamber for combustion. Air intake system: including air filters and intake ducts, used to introduce air into the combustion chamber. Exhaust system: including exhaust pipes and mufflers, used to exhaust the exhaust gas generated after combustion. Cooling system: including cooling water tank, water pump, radiator, etc., used to reduce engine temperature and maintain its normal operating temperature. Lubrication system: including oil tank, oil pump, and oil filter, used to provide lubrication for the engine and reduce friction and wear of components. Starting system: used to start the engine, usually including a starting motor and starting circuit. Generator: The generator generates electrical energy by turning the engine. Control panel and control system: used to monitor and control the operating status of the generator set, including parameters such as voltage, current, frequency, temperature, etc. These are the main components of Diesel generator, and different types and specifications of Diesel generator may have some differences. Understanding the internal structure of a generator helps to better understand its working principle and maintenance methods.

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Several Precautions for Summer Maintenance of Diesel Engines

Summer is a hot season for diesel engine operation. In order to ensure the performance and lifespan of the diesel engine, the following are some precautions for summer maintenance: Cooling system inspection: Ensure that the coolant level in the cooling system is sufficient and the coolant concentration is appropriate. At the same time, check whether the water pump, radiator and cooling fan of the cooling system operate normally, and clean the surface of the radiator to prevent the blockage of dust and dirt. Air filter maintenance: Clean or replace the air filter to ensure that the engine receives sufficient and clean air. In summer, there is a lot of dust in the air, which can easily block the air filter, leading to insufficient air supply and affecting combustion efficiency. Fuel quality: Use high-quality fuel and avoid using inferior or unknown sources of fuel. Poor quality fuel is prone to impurities, leading to fuel injector blockage and incomplete combustion, which affects engine performance. Lubrication system inspection: Ensure that the oil level is appropriate and the oil quality is good. Under high temperatures, the lubrication needs of the engine are higher, so it is necessary to regularly check the concentration and cleanliness of the engine oil, and replace the engine oil and filter in a timely manner. Battery maintenance: High temperatures in summer can easily cause battery moisture to evaporate. Check the battery electrolyte level and add distilled water if necessary. Keep battery terminals clean to prevent corrosion. Transmission system inspection: Regularly check the working status of the clutch, transmission belt, and gearbox to ensure smooth operation of the transmission system. Ventilation of engine room: ensure good ventilation of the engine room, install Sun visor or shelter to avoid direct sunlight and reduce the internal temperature of the engine room. Regular maintenance: Summer is a hot season, and maintenance of diesel engines is more important. Regularly conduct comprehensive inspections and maintenance to ensure timely repair of problems and prevent the occurrence of faults. In summary, summer maintenance is crucial for the performance and lifespan of diesel engines. Following the above precautions and conducting regular inspections and maintenance can ensure stable operation of diesel engines under high temperature conditions and improve their service life. If you are not familiar with the maintenance of diesel engines, it is best to hire professional technical personnel for inspection and maintenance.

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