Device improving air-intake of combustion engine

Abstract

The invention belongs to an internal combustion engine technical field, in particular to a device for improving air intake of internal combustion engine. The invention comprises an air inlet manifold and a first air cleaner and a turbocharger which are orderly arranged along the air intake direction of an air intake main pipe, wherein the air inlet manifold has the front end provided with a jet air pump which is connected with the turbocharger in series or in parallel and controlled by the ECU. The invention is capable of increasing the air pressure in the air inlet manifold and improving theaeration coefficient in the cylinder while in instantaneous acceleration, thereby changing the combustion conditions of the internal combustion engine at a medium and low speed, resolving the problemof the poor accelerating performance of the turbocharger at the medium and low speed, improving the output torque at the medium and low speed, optimizing the accelerating performance and greatly shortening the acceleration response time of the automobile; moreover, because the fuel is fully burned, the utilization factor of the fuel is also improved and the discharge capacity of the internal combustion engine is reduced.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, in particular to a device for improving air intake of internal combustion engines. Background technique [0002] At present, the use of supercharging technology to increase the charge density of internal combustion engines has become one of the most effective strengthening measures to increase the power of a single diesel engine. Existing exhaust gas turbocharged internal combustion engines for vehicles mostly use pulsed exhaust gas turbochargers. When the internal combustion engine is operating at a low-to-medium speed, the vehicle suddenly steps on the accelerator pedal, because the exhaust gas flow cannot be increased to the corresponding flow at the same time to drive the compressor. , resulting in insufficient air intake in a short period of time, deterioration of combustion, and insufficient power. That is to say, it usually takes a while for the internal combustion eng...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above that since the front end of the intake manifold is provided with an air jet pump connected in series or in parallel with the turbocharger, and the air jet pump is controlled by the ECU, when the accelerator pedal is stepped on, the ECU will The data turns on the jet pump, injects fresh air into the intake pipe, increases the air pressure in the intake manifold, and increases the gas charge coefficient in the cylinder at the moment of acceleration, thereby improving the combustion condition of the internal combustion engine at low speed and changing the low speed acceleration performance of the turbocharger. Improve the output torque of the engine at low and medium speeds, optimize the acceleration performance, and greatly shorten the acceleration response time of the vehicle; at the same time, because the fuel is fully burned, the fuel utilization rate is also improved and the emission of the internal combustion engine is reduced.

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