Air inlet supercharging system of engine in plateau environment

Abstract

The invention discloses an air inlet pressurization system of an engine in a plateau environment. The air inlet pressurization system comprises an air inlet pressurization module, a storage battery and a control switch. Wherein the air inlet pressurization module further comprises a stop valve, a volumetric fan, a control module, a direct current motor and a pressure limiting valve, and the storage battery is connected with the control module; under the plateau environment, through the arrangement of the stop valve and the positive displacement fan, the air inlet pressure in the engine starting process is increased to the standard atmospheric state, the output torque and the starting performance of the engine are recovered, the power performance of the engine under the plateau environment is improved, and great discount of the power performance is avoided; the direct-current motor is adopted to drive the positive displacement fan to supercharge air, the air inflow requirement of the engine during low-idle-speed operation is met, a large amount of pollution smoke is prevented from being sprayed out, air is prevented from flowing into the engine through an original pipeline, the overall performance is improved, the carbon emission is reduced, the load pressure of the particulate filter is reduced, and the air compressor is suitable for turbo supercharged engines and self-suction engines.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an air intake supercharging system of an engine in a plateau environment. Background technique [0002] 1. In the plateau environment, since the turbocharger does not work during the engine starting process, the intake air flow is directly affected by the atmospheric pressure and is greatly reduced. In order to avoid the generation of a large amount of black smoke, it is necessary to reduce the fuel injection during the starting process. In this way, the output torque of the engine is reduced, and its starting performance is greatly reduced. [0003] 2. It is especially difficult for the whole vehicle equipment with hydraulic system. When the output torque of the engine is reduced and the temperature of the hydraulic oil is low, the load of the hydraulic system (the resistance along the way) increases greatly, and the engine has to undergo many It takes time for the ignition to ...

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Problems solved by technology

[0002] 1. In the plateau environment, because the turbocharger does not work during the engine starting process, the intake air flow is directly affected by the atmospheric pressure and is greatly reduced. In order to avoid the generation of a large amount of black smoke, it is necessary to reduce the fuel injection during the starting process In this way, the output torque of the engine is reduced, and its starting performance is greatly reduced.

[0003] 2. It is especially difficult. For the complete vehicle equipment with hydraulic system, when the output torque of the engine decreases and the temperature of the hydraulic oil is low, the load (resistance along the journey) of the hydraulic system rises sharply. It takes a long time for the ignition to start successfully, and the exhaust smoke during the whole process will also increase greatly, polluting the environment

However, the contradiction between the reduction of engine output torque and the increase of system load cannot be fundamentally resolved in this way, and the overall effect is poor

[0005] 4. According to the gradual upgrade of emission regulations, most engines have added after-treatment systems, among which DPF (particulate filter) will face great challenges in plateau environments

A large amount of soot is bound to be generated during the engine starting process. The DPF carbon load and regeneration control need to be carefully calibrated at different altitudes, and must be adjusted according to the load conditions of different vehicle equipment. The improvement process is difficult. Therefore, it is proposed , an air intake boosting system for an engine in a plateau environment

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