Diesel oil engine turbine resonance composite pressurezation system

A technology of supercharging system and diesel engine, applied in mechanical equipment, combustion engine, machine/engine, etc., can solve problems such as hindering the start and acceleration of diesel engine, low input and output power of turbocharger, and increasing intake air volume of diesel engine, etc. The effect of increasing the power

Inactive Publication Date: 2004-12-22
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The three patents all have the following disadvantages: when the diesel engine starts or suddenly accelerates, the exhaust gas displacement is small, so that the input and output power of the turbocharger is low, so that the air boost pressure at the outlet of the turbocharger is very low, which is not enough Effectively increase the intake air volume of the diesel engine, which hinders the starting and acceleration of the diesel engine in a short period of time, forming a lag in the response of the turbocharged diesel engine to sudden loading and sudden acceleration

Method used

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  • Diesel oil engine turbine resonance composite pressurezation system

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Embodiment Construction

[0008] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0009] like figure 1 As shown, the present invention mainly includes electromagnetic cut-off valves 1, 2, 3, speed sensor 4, controller 5, supercharger 6, turbine 7, intercooler 8, resonance cavity 9, additional volume cavity 10, and diesel engine 11. The intercooler 8 adopts a shell-and-tube heat exchanger, and the resonant cavity 9 and the additional volume cavity 10 are cylindrical or cuboid cavities made of thin metal plates. The supercharger 6 and the turbine 7 are coaxially connected, and the magnetoelectric speed sensor 4 is installed near the outer edge of the impeller of the supercharger 6 . The control ends of the electromagnetic cut-off valves 1, 2, 3 and the output end of the rotational speed sensor 4 are all electrically connected with the controller 5 . The controller 5 controls the switching states of the electromagnetic ...

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Abstract

The supercharging system is composed of electromagnetical stop valve, revolution speed transducer, controller, booster, turbine, inter-cooler, resonant cavity, additional volume cavity, and diesel engine etc. Controlling switch of stop valve speeds up booster of turbine under no load condition so as to run at higher rotating speed in short time period. In early stage of speeding or loading diesel engine, resonance pressure charging instead of turbocharging reaches target of boost. When rotate speed of booster exceeds 60% of rated speed, with signal from transducer being received, the controller sends out signal to change operating conditions of three stop valves, cuts off connection between additional volume cavity and resonant cavity. Air from atmosphere passing through booster, and going to inter-cooler enters to resonant cavity, where resonant boost effect is generated. The invention raises volume power of diesel engine.

Description

technical field [0001] The invention relates to an air intake supercharging system of a diesel engine, in particular to a diesel engine turbo-resonance composite supercharging system combining turbocharging and resonance supercharging, belonging to the technical field of combustion engines. Background technique [0002] At present, the diesel engine supercharging system used is to push the turbocharger to be supercharged by the exhaust gas discharged from the combustion of the diesel engine. In the existing technology, the patent No. 91225356.8 is "a turbocharged diesel engine", and the patent No. Compressed Diesel Engine", and the "V-type Supercharged Diesel Engine Exhaust System" with patent number 02211319.3. The three patents all have the following disadvantages: when the diesel engine starts or suddenly accelerates, the exhaust gas displacement is small, so that the input and output power of the turbocharger is low, so that the air boost pressure at the outlet of the tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B33/40F02M35/10
Inventor 马捷王锦程
Owner SHANGHAI JIAO TONG UNIV
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