A Forced Exhaust Gas Injection System to Suppress Pre-ignition and Knock

Abstract

The invention discloses a compulsory waste gas ejecting system capable of inhibiting preignition and detonation. The compulsory waste gas ejecting system is arranged between a gas inlet passage and a gas exhaust pipe of an engine; an electric gas compressor communicates with the gas exhaust pipe through a pipeline; the electric gas compressor sequentially communicates with an intercooler, a gas storage cylinder, a reducing valve, a gas collection tank and a blasting valve through pipelines; a pressure sensor and a pressure stabilizer are arranged on the gas storage cylinder; waste gas led out from the gas exhaust pipe is compressed by the electric gas compressor; the compressed gas is cooled by the intercooler and then is stored in the gas storage cylinder; the gas in the gas storage cylinder enters the gas collection tank through the reducing valve; and when preignition or detonation happens, the blasting valve is opened, so that the gas in the gas collection tank is blasted into the gas inlet passage to be mixed with fresh air, and then mixed gas enters a cylinder for participating in combustion. According to the system, the gas led out from the gas exhaust pipe is stored by the gas compressor and the gas storage tank, and the waste gas is blasted into the gas inlet passage of the corresponding cylinder for compulsorily joining in gas inlet when preignition or detonation of the engine is detected, so that preignition and detonation can be effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an injection system for controlling and suppressing early combustion and knocking of internal combustion engines, storing exhaust gas and recirculating exhaust gas. Background technique [0002] With the increasing shortage of global oil resources, improving the thermal efficiency of internal combustion engines and reducing the fuel consumption of engines have become the focus of increasing attention of researchers. The thermal efficiency of traditional port injection gasoline engines is low, especially under common operating conditions. The thermal efficiency needs to be improved urgently. The miniaturization and low speed of gasoline engines can greatly improve the thermal efficiency and power output of gasoline engines, so it has gradually become a research hotspot. The miniaturization of the gasoline engine improves the economy and power of the engine by r...

AI Technical Summary

Problems solved by technology

Among them, enriching the mixture is the simplest and most feasible, but it will increase fuel consumption, which is a compromise choice

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