Multi-point injection gas supply system for fuel gas generator set

Abstract

The invention discloses a multi-point injection gas supply system for a fuel gas generator set. The multi-point injection gas supply system comprises a decompression valve, a fuel gas injection track, a cylinder, a gas inlet manifold and a gas outlet manifold, wherein the gas outlet manifold is provided with an oxygen sensor; and both the oxygen sensor and the fuel gas spray track are connected with a signal processing and controlling device. In the invention, the practically-required air-fuel ratio is optimized automatically by using the signal processing and controlling device, the startup time of the fuel gas injection track is adjusted automatically according to a signal detected by the oxygen sensor, and the air-fuel ratio practically required by the cylinder of the generator set is optimized, so that the quantity of harmful substances emitted by tail gas are controlled at the minimum value, energy is saved, and contribution to environmental protection is made simultaneously.

Description

technical field [0001] The invention relates to a multi-point injection air supply system, in particular to an energy-saving and environment-friendly multi-point injection air supply system for a gas generator set that automatically adjusts the air-fuel ratio. Background technique [0002] The current multi-point injection system is equipped with a fuel injector in each cylinder. The electronic control unit controls and injects each cylinder individually or in groups in order to make the gas distribution even. The intake pipe is generally designed according to the maximum gas volume. It directly controls the air-fuel ratio. Therefore, whether the engine is in a cold state or a hot state, its transient response and fuel economy are excellent. However, the control system of the above-mentioned multi-point injection system is more complicated, the cost is higher, and it cannot be realized. The gas volume is automatically and reasonably controlled, and the intake pipe is designe...

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Problems solved by technology

[0002] The current multi-point injection system is equipped with a fuel injector in each cylinder. The electronic control unit controls and injects each cylinder individually or in groups in order to make the gas distribution even. The intake pipe is generally designed according to the maximum gas volume. It directly controls the air-fuel ratio. Therefore, whether the engine is in a cold state or a hot state, its transient response and fuel economy are excellent. However, the control system of the above-mentioned multi-point injection system is more complicated, the cost is higher, and it cannot be realized. The gas volume is automatically and reasonably controlled, and the intake pipe is designed according to the maximum gas volume. When the gas combustion is not complete, it will cause energy waste, especially for gas generator sets, which have a large gas volume and cause even greater waste. And the harmful waste gas produced by the incomplete combustion of gas will cause serious pollution to the environment

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