Diesel Engine Exhaust Aftertreatment Device Heater and Temperature Raising Method

Abstract

The invention relates to a diesel engine exhaust aftertreatment device heater and a heating method. The diesel engine exhaust aftertreatment device heater and the heating method are capable of increasing exhaust temperature of a diesel vehicle without any ignition system needed and regenerating a diesel engine exhaust aftertreatment device at an ultra-low temperature below zero. A heating bar is of a cylindrical structure and is divided into a terminal part, a heat conduction part and a high-temperature igniting head, wherein the heat conduction part is located in a diesel gasification chamber and is in sealed fit with end covers at two ends of the diesel gasification chamber, the terminal part and the high-temperature igniting head are located outside the end covers of the diesel gasification chamber, the heat conduction part of the heating bar is in sealed connection with the end covers at two ends of the diesel gasification chamber, a heat accumulator is sleeved on the heat conduction part of the heating bar and is located in the diesel gasification chamber, one end of a combustion chamber is connected with the diesel gasification chamber, the combustion chamber is covered on the high-temperature igniting head, an oil gas nozzle is formed in an end cover, located in a combustion chamber cover, of the diesel gasification chamber, an oil spraying tube part of an oil-conveying tube penetrates through the end covers of the diesel gasification chamber and is located in the diesel gasification chamber, a heating part of the oil-conveying tube is located in the combustion chamber.

Description

technical field [0001] The invention relates to a diesel engine exhaust post-processing device warmer capable of raising the exhaust temperature of a diesel vehicle and regenerating the diesel engine exhaust post-processing device at an ultra-low temperature below zero without an ignition system The invention relates to a heating method and belongs to the field of diesel igniter manufacturing. Background technique [0002] CN 101178020A, titled "diesel engine exhaust emission purification system", is composed of a diesel engine exhaust particle filter, a mixed gas pipeline, a combustion-supporting air pipeline, and an electronic control unit with a wall-flow filter body. A sensor for measuring pressure, a temperature sensor installed on the burner, and temperature sensors respectively installed in front of and behind the exhaust particulate filter are installed at the gas port. A burner is installed in front of the exhaust particulate filter. The burner is equipped with a f...

AI Technical Summary

Problems solved by technology

Its shortcomings: First, the diesel engine exhaust emission purification system purifies the diesel fuel by controlling the ignition coil to control the spark plug to realize the ignition of the diesel oil. Not only the reliability is subject to the composition of the circuit structure, but also the condition of the spark plug itself. The reliability is poor; the second is that the system cannot ignite diesel oil in a low-temperature state, especially in the sub-zero state, under the condition of tens of degrees below zero, it is impossible to achieve low-temperature ignition; the third is that ignition failure directly produces secondary environmental pollution

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