A pressurized air deflation device and deflation method

Abstract

The invention discloses a pressurized air bleeding deviceand method. The pressurized air bleeding device includes an air outlet pipe and a butterfly valve, one end of the air outlet pipe is installedon a shell of an intercooler and communicates with the interior of the intercooler, and the other end of the air outlet pipe is connected with an inlet end of the butterfly valve; and the butterfly valve is controlled by an electronic control unit (ECU) of an engine. The air bleeding method corresponding to the air bleeding device includes the steps that ECU a monitored air inlet temperature collected by the ECU is lower than a preset temperature and a monitored pressurized air pressurecollected by the ECU is higher than a preset pressure, at the moment, the butterfly valve needs to be controlled to open, and air bleeding is started; alternatively, if the monitored air inlet temperature collected by the ECU is lower than the preset temperature and the monitored pressurized air pressure does not collected by the ECU but a monitored operating load collected by the ECU is larger than a preset load, at the moment, the butterfly valve still needs to be controlled to open, and air bleeding is started. According to the pressurized air bleeding device and method, the problem of the high detonation pressure of an engine in service of the arctic region can be fundamentally solved.

Description

technical field [0001] The invention belongs to the technical field of engine supercharging systems, and in particular relates to a pressurized air deflation device and a deflation method. Background technique [0002] The engine supercharging system uses a supercharger (including a turbine and a compressor) to pre-compress the air and then feed it into the cylinder to increase the air density and increase the intake air volume. The increase of the intake air volume of the engine can increase the circulating oil supply and improve fuel economy; it can also increase the engine power and obtain good acceleration, but the temperature will increase after the air is pressurized and the density will decrease. If the temperature is too high, it will not only reduce the fuel consumption. Gas volume, weaken the supercharging effect, may also cause engine deflagration. Therefore, the general supercharger is matched with an intercooler, and the high-temperature pressurized air enters ...

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Problems solved by technology

[0006] However, the above two measures cannot fundamentally solve the problem of high explosion pressure of the engine (diesel engine) in operation in the arctic region; moreover, the additionally configured air preheating device has high price and high operating cost

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