Vehicle exhaust gas heating device and control method thereof

Abstract

An automobile exhaust gas heating device and a control method thereof, the device comprises an engine exhaust pipe, a muffler, a heat exchanger connecting the engine exhaust pipe and the muffler, a stepping motor connected with a valve, and a water temperature sensor connected with a water temperature control module The inner side of the heat exchanger is axially provided with a spiral steel sheet, and there is cooling liquid inside the heat exchanger. The cooling liquid flows out from the water outlet pipe joint arranged on the heat exchanger, and passes through the water pump, the first radiator, the valve and the first radiator in turn. The second radiator then flows back to the heat exchanger through the return water pipe joint, the stepper motor is also connected with the water temperature control module, and the water temperature sensor is arranged on the second radiator. The invention utilizes the high-temperature exhaust gas of the engine to provide heat to the vehicle cab through heat exchangers, water pumps, valves, radiators, etc., so as to achieve the purpose of utilizing waste heat. The invention has the advantages of simple structure, accurate control, convenient operation, energy saving and safety, and good heating effect.

Description

technical field [0001] The invention relates to a device for recovering and utilizing the heat of automobile exhaust and a control method thereof, in particular to a heating device for exhaust gas of an automobile engine and a control method thereof, and belongs to the technical field of automobiles. Background technique [0002] With the continuous increase of the number of automobiles in our country, automobiles have spread all over the country, and there are footprints of automobiles in towns and villages in various regions. With the increase in the use of automobiles, some problems in the use of automobiles are also constantly reflected, such as The problem of car warmth in winter is particularly prominent, especially in Northeast China, where the average winter temperature is about minus 30°C. When the car is driven at minus 30°C, the temperature of the cab is low. Drivers and passengers feel uncomfortable in this environment for a long time. It is very cold, the driver...

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Problems solved by technology

[0002] With the continuous increase of the number of automobiles in our country, automobiles have spread all over the country, and there are footprints of automobiles in towns and villages in various regions. With the increase in the use of automobiles, some problems in the use of automobiles are also constantly reflected, such as The problem of car warmth in winter is particularly prominent, especially in Northeast China, where the average winter temperature is about minus 30°C. When the car is driven at minus 30°C, the temperature of the cab is low. Drivers and passengers feel uncomfortable in this environment for a long time. It is very cold, the driver’s body will be stiff when driving in this environment for a long time, the operation will be inflexible, and traffic accidents will easily occur. It is thicker and harder to start. Due to the thick oil and poor lubrication, it will accelerate the wear of the engine cylinder and shorten the service life of the engine. Based on the above reasons, car heating devices and engine heating pots are used, but the current heating device Generally, the cooling water of the engine body is used as the heat source. When the car is in a low-temperature environment, the cooling water temperature of the engine is low and the heat provided is limited, and the heating pot usually uses gasoline to heat the engine. This method is not energy-saving enough. There are also some heating devices that use automobile exhaust as cab heating, but their structures and controls are complex and have a single function.

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