High-pressure common rail type diesel engine and design method thereof

A design method and diesel engine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of difficult high-pressure common rail diesel engines, cumbersome average effective pressure values, and low accuracy of results, and achieve good fuel injection Features, comprehensive performance index improvement, simple structure effect
CN106988943AInactive Publication Date: 2017-07-28刘峰
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
刘峰
Publication Date
2017-07-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-pressure common rail type diesel engine and a design method thereof. The design method comprises following steps: the circular absorbing heat is calculated; the circular heat releasing amount is calculated; the circular heat efficiency is calculated; the circular average pressure is calculated; the air pressure of the Szabad circular middle point 5 is calculated, and according to the calculated circular absorbing heat, circular heat releasing amount, circular heat efficiency, circular average pressure and air pressure of the Szabad circular middle point 5, the high-pressure common rail type diesel engine is designed. The high-pressure common rail type diesel engine comprises an oil supply pump assembly, an oil spraying device assembly, a common rail assembly and an electric control unit; the electric control unit controls the oil supply pump assembly, the oil spraying device assembly and the common rail assembly to move, the oil supply pump assembly compresses the fuel oil to the needed pressure, fuel oil is conveyed to the common rail assembly for waiting to be distributed to the corresponding oil spraying device assembly, and the high-pressure common rail type diesel engine designed through the method is more precise and practical.
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Description

technical field

[0001] The invention belongs to the field of diesel engines, and in particular relates to a high-pressure common rail diesel engine and a design method thereof. Background technique

[0002] High-pressure common rail diesel engine refers to a fuel supply machine that completely separates the generation of injection pressure and the injection process from each other in a closed-loop system composed of a high-pressure oil pump, a pressure sensor and an electronic control unit. The high-pressure common rail system can meet the requirements that other fuel injection systems are difficult to meet, such as low fuel consumption, low emission, high-pressure injection, flexible fuel injection characteristics and control of fuel injection pressure. It can be said that the high-pressure common rail electronically controlled fuel system can effectively reduce the emission of diesel engines and improve the performance of diesel engines.

[0003] The Sabad cycle is also c...

Claims

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