Pneumatic vehicular braking energy recovery and recycling device and control method

Abstract

The invention provides a pneumatic vehicular braking energy recovery and recycling device and a control method, which belong to the technical field of energy conservation and emission reduction of vehicles. The device provided by the invention is characterized in that in the checking brake process of a vehicle, an air compressor is connected with a drivetrain system of the vehicle by an electromagnetic clutch, the air compressor is driven to operate by using the inertia of the vehicle so as to recover the braking energy of the vehicle, and the high pressure air produced by the air compressor is stored in a high pressure gas cylinder; when a vehicle is accelerated, the high pressure air stored in the high pressure gas cylinder can carry out air-intake compensation on an internal-combustion engine, which facilitates the sufficient air acquisition of the internal-combustion engine under instantaneous conditions, and improves the dynamic property and acceleration performance of the internal-combustion engine, especially can shorten the air-intake response delay of a turbocharged internal-combustion engine when the internal-combustion engine is accelerated; and when the internal-combustion engine is started, the high pressure air can carry out additional air compensation on the air exhaust of the internal-combustion engine (in particular to a hybrid electric vehicle with an internal-combustion engine frequently controlled to start and stop) so as to reduce the discharge of noxious substances in a starting process of the internal-combustion engine.

Description

technical field [0001] The invention relates to a vehicle braking energy air pressure recovery and utilization device and control method, specifically a system and a control method for compensating the intake air of an internal combustion engine during vehicle acceleration and performing additional air compensation for exhaust gas when the internal combustion engine is started by using vehicle braking energy The method belongs to the technical field of vehicle energy saving and emission reduction. Background technique [0002] Energy shortage and environmental pollution are two major issues in today's world. At the same time, with the increasingly stringent vehicle emission regulations, people are constantly exploring ways to improve the combustion efficiency of internal combustion engines and reduce harmful emissions. Modern internal combustion engines generally pressurize the intake air of the internal combustion engine through exhaust gas turbochargers or superchargers to...

AI Technical Summary

Problems solved by technology

Its disadvantage is that when the engine rotates at a high speed, the output power does not increase significantly, and its structure and volume are large, and at the same time, it increases the load of the internal combustion engine to a certain extent.

In order to broaden the working area of ​​the internal-combustion engine intake booster and give full play to the advantages of the exhaust gas turbocharger and the supercharger, the combination of the two modes has been applied, but it also increases the complexity of the structure and production costs

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