Fuel gas dual-fuel electrical control device with fuel gas leakage alarm function, and fuel gas leakage detection and alarming method

Abstract

The invention discloses a fuel gas dual-fuel electrical control device with a fuel gas leakage alarm function. The fuel gas dual-fuel electrical control device comprises a fuel gas electrical control unit (ECU), a fuel gas leakage sensor, a solenoid valve, a fuel gas jet rail, a decompressor and a fuel gas state indication switch, wherein the fuel gas leakage sensor is arranged on a fuel gas supply pipeline; one end of the solenoid valve is externally connected with a gas storage tank, and the other end of the solenoid valve passes through the decompressor and is connected with the fuel gas jet rail; the fuel gas ECU is used for controlling the solenoid valve and the fuel gas leakage sensor to be switched on or off; the fuel gas leakage sensor is used for detecting the concentration of external combustible gas and sending detected information to the fuel gas ECU through an electrical signal; the fuel gas state indication switch is connected with the fuel gas ECU and controlled by the fuel gas ECU. A fuel gas leakage alarm device is integrated in a fuel gas control system; once the leakage of fuel gas is detected, the fuel gas control system can be used for performing emergency disposal in first time without manual intervention and automatically making a switch to a fuel oil mode, so that the active safety of a vehicle is improved.

Description

technical field [0001] The invention relates to the field of gasoline / natural gas dual-fuel mixed supply control, in particular to gas fuel leakage detection and emergency treatment, in particular to a gas dual-fuel electronic control device with a gas leakage alarm function and a gas leakage detection and alarm method. Background technique [0002] Compared with gasoline, natural gas has the characteristics of low price and environmental protection. Therefore, more and more vehicles have been converted into gasoline / natural gas dual fuel supply. While people enjoy the economy and environmental protection brought by natural gas, it also brings a safety hazard to vehicles. After the modification of natural gas, since the gas supply pipeline is installed later, with the passage of time and the aging of the pipeline, compared with the original gasoline supply, gas leakage is more likely to occur. If the leakage occurs, it is not detected in time. There is a risk ...

AI Technical Summary

Problems solved by technology

The user can only install the gas leakage alarm in an additional way. Since the gas leakage alarm device and the gas control system are separated, once a gas leakage alarm occurs, emergency treatment can only be performed manually, and the gas supply can be manually shut down.

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