Control system and control method for temperature rising of diesel engine exhaust aftertreatment device

A diesel engine and exhaust post-treatment technology, which is applied in the electronic control of exhaust treatment devices, exhaust treatment, exhaust devices, etc., can solve the problems of inability to achieve low-temperature ignition, poor ignition reliability, secondary environmental pollution, etc. , to achieve the effect of avoiding excessive heating, sufficient combustion and good regeneration effect

Active Publication Date: 2013-09-04
GUIZHOU HUANGDI DIESEL ENGINE CLEANER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Control system and control method for temperature rising of diesel engine exhaust aftertreatment device
  • Control system and control method for temperature rising of diesel engine exhaust aftertreatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: with reference to attached figure 1 . A diesel engine exhaust post-processing device temperature rise control system, the driving computer 4 signal input terminals are respectively connected to the diesel engine 7 speed signal output terminal, the diesel engine exhaust post-processing device 6-fold pressure signal output terminal, and the post-processing device warmer 5 temperature The signal output end, the signal output end of the air storage tank pressure sensor in the air compression device 8, and the output end of the oil level signal of the fuel tank 2 are connected, and the signal output end of the driving computer 4 is respectively connected to the switch signal control end of the oil supply pump 10, the multiple The switch signal control end of the air valve 9 is connected to the switch signal control end of the temperature rise controller 3, the outlet of the fuel tank 2 is connected with the inlet of the oil supply pump 10 through the oil delive...

Embodiment 2

[0011] Embodiment 2: On the basis of Embodiment 1, the diesel engine exhaust pipe 1 is connected with a bypass pipe 11 through a solenoid valve, and the switch signal control end of the solenoid valve is connected with the signal output end of the trip computer 4 .

Embodiment 3

[0012] Embodiment 3: with reference to attached figure 2 . On the basis of Embodiment 1, a method for controlling the temperature rise of a diesel engine exhaust post-processing device, the trip computer 4 powers on and self-inspects, and the initial inspection refers to the ECU performing data collection on peripheral equipment, autonomously controlling or prompting due to fuel tank refueling. Add corresponding amount of additives, and perform data collection, display or alarm, detect ECU memory capacity, and prompt data collection and storage status. The ECU memory should be able to store more than 15 days of collected data, and it will be automatically cleared when the storage is full. When the 6 times pressure of the diesel engine exhaust post-processing device reaches the set value of the double pressure regeneration, the driving computer 4 instructs the temperature rise controller 3 to turn on the power supply to the electric heating rod in the post-processing device t...

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Abstract

The invention relates to a control system and a control method for temperature rising of a diesel engine exhaust aftertreatment device. A signal input end of an ECU is respectively connected with a diesel engine speed signal output end, a voltage multiplying signal output end of the diesel engine exhaust aftertreatment device, a temperature signal output end of a temperature rising device of the aftertreatment device, a signal output end of a pressure sensor of an air storage tank of an air compressor, and an oil tank oil quantity liquid level signal output end. A signal output end of the ECU is respectively connected with a switch signal control end of an oil supply pump, a switch signal control end of a multipath air valve, and a switch signal control end of a temperature rising controller. An outlet of an oil tank is communicated with an inlet of the oil supply pump through an oil conveying pipe, an outlet of the oil supply pump supplies oil to the temperature rising device of the aftertreatment device through an oil conveying pipe, air inlets of the multipath air valve are in parallel connection to be communicated and communicated with an outlet of the air storage tank of the air compressor, and air outlets of the multipath air valve are in parallel connection to be communicated to supply oxygen to the temperature rising device of the aftertreatment device.

Description

technical field [0001] The invention relates to an ECU intelligently controls the distribution of fuel and oxygen according to the working condition of the diesel engine exhaust post-processing device, and maintains the combustion temperature at a set value. The temperature rise control system and control method of the diesel engine exhaust post-processing device belong to Manufacturing field of diesel engine exhaust after-treatment device and control method. Background technique [0002] CN101178020A, the name "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 a temperature sensor respectively installed in front of and behind the exhaust particulate filter are installed at the outlet, and a burner is installed in fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/025F01N9/00
CPCY02T10/40
Inventor 黄黎敏黄利锦
Owner GUIZHOU HUANGDI DIESEL ENGINE CLEANER
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