Supercharging device of engine

Abstract

The invention discloses a supercharging device of an engine, which comprises an air source, an air cylinder, an electromagnetic valve and a normally open butterfly valve. The air source is from an air compressor of a braking system, and the compressor is driven by the engine; an air inlet of the air cylinder is communicated with an auxiliary air module in an air supply system of the engine through an air inlet pipeline, an air outlet of the air cylinder is connected with an air inlet manifold of the engine through an air outlet pipeline, and both the air inlet and the air outlet of the air cylinder are provided with two one-way valves to maintain the pressure of high-pressure air in the air cylinder; the normally open butterfly valve is positioned between the air inlet manifold of the engine and an intercooler; and the electromagnetic valve is arranged on the manifold of the engine, connected with the air outlet pipeline of the air cylinder, communicated with the normally open butterfly valve and controlled by a key switch. By using the high-pressure air stored in the braking system and forcibly supplying air to the air inlet manifold of the engine through the air compressor, the air cylinder of the engine has enough air, so the engine is easy to ignite, and the working efficiency of the engine is further improved.

Description

(1) Technical field [0001] The invention relates to an engine supercharging device, which can supply sufficient gas to a cylinder under the working conditions of starting the engine and suddenly increasing the throttle, thereby improving the working efficiency of the engine, and belongs to the field of automobiles. (2) Background technology [0002] The starting of the engine is achieved by using the starter to drive the crankshaft to rotate, so that each cylinder completes intake air, compression, work, and exhaust in sequence. Diesel engines generally use exhaust gas turbochargers to achieve intake air boosting, which uses the exhaust gas energy released by the exhaust stroke of the engine cylinder to drive the impeller of the exhaust gas turbocharger to drive the turbine to complete intake air compression, ensuring that the intake air is compressed. Excess coefficient of gas, but in the process of engine starting, the engine speed is too low, the turbocharger cannot guara...

AI Technical Summary

Problems solved by technology

[0006] 1. During the engine starting process, the engine speed is too low, and the above two structures cannot be used to achieve boosting when the engine starts, and cannot change the temperature of the engine cylinder, so it is impossible to improve the combustion process during starting;

[0007] 2. Both are equipped with a separate power device for changing the pressure of the engine intake pipe, which does not make full use of the energy of the exhaust gas of the engine, resulting in waste of energy and increasing the cost of the device

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