Double-compressor parallel self-circulation pulse supercharging device of diesel engine and control method thereof

Abstract

The invention provides a double-compressor parallel self-circulation pulse supercharging device of a diesel engine and a control method thereof. The double-compressor parallel self-circulation pulse supercharging device of the diesel engine comprises a main compressor, a turbine, a pulse air inlet compressor and a pulse detonation pipe, an air filter is connected with an air inlet of an engine through the main air compressor, an air inlet intercooler and an air inlet header pipe in sequence, an exhaust port of the engine is connected with the turbine through an exhaust header pipe, the turbine is connected with the main compressor through a transmission shaft, an electromagnetic clutch is arranged between the turbine and the pulse air inlet compressor, the pulse air inlet compressor is connected with the pulse detonation pipe through a first electromagnetic valve, and an exhaust port of the pulse detonation pipe is connected with the exhaust header pipe through a second electromagnetic valve. The two compressors are used for providing intake air for the diesel engine and a pulse detonation combustion chamber, flow division of the intake air into a cylinder of the diesel engine is avoided, the air inflow of the pulse detonation combustion chamber is effectively increased, design match of the whole system is optimized, and the transient performance of the diesel engine is improved.

Description

technical field [0001] The invention relates to the field of engine combustion and control, in particular to a dual-compressor parallel self-circulation pulse supercharging device for a diesel engine and a control method. Background technique [0002] The traditional supercharging technology has the problems of long supercharging response time and poor supercharging effect in plateau areas. These problems can be improved by using detonation boost technology. Compared with Diesel isobaric combustion, cyclic pulse detonation combustion has the advantages of high cycle thermal efficiency, large unit thrust-to-weight ratio, and self-pressurization in the combustion process, such as figure 1 . [0003] Under normal working conditions, the inlet valve of the Pulse Detonation Combustion Chambar (hereinafter referred to as PDC) is closed, and the diesel engine works normally. When the diesel engine is running at a light load, its output power is instantly increased. Due to the la...

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Problems solved by technology

However, this method has the problem of difficulty in the intake of the detonation tube. During the process of detonation tube scavenging, the pressure of the exhaust pipe is higher than that of the detonation tube itself, so that the detonation tube cannot effectively discharge exhaust gas, and the pulse detonation at the same time Difficulty with continuous detonation inside the tube

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