Diesel engine exhaust aftertreatment device temperature riser control system and control method

A diesel engine and exhaust post-treatment technology, which is applied to the electronic control of exhaust treatment devices, exhaust treatment, exhaust devices, etc., can solve the problems of inability to achieve low-temperature ignition, inability to ignite diesel, poor ignition reliability, etc., to achieve Avoid the effects of excessive heating, complete regeneration, and sufficient combustion

Active Publication Date: 2016-03-30
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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  • Diesel engine exhaust aftertreatment device temperature riser control system and control method

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 warmer 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 The temperature signal output end, the signal output end of the air storage tank pressure sensor in the air compression device 8, the output end of the oil level signal of the fuel tank 2 and the output end of the additive tank 1 addition signal are connected, and the signal output end of the trip computer 4 is respectively It is connected with the switch signal control terminal of the mixing oil pump 11, the switch signal control terminal of the oil supply pump 10, the switch signal control terminal of the multi-way air valve 9 and the switch signal control terminal of the temperature rise controlle...

Embodiment 2

[0011] Embodiment 2: On the basis of Embodiment 1, the exhaust pipe 12 of the diesel engine is connected with a bypass pipe 13 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 riser of a diesel engine exhaust post-processing device, the trip computer 4 powers on and self-inspects, and the initial inspection refers to that the ECU performs data collection on the peripheral equipment, and autonomously controls or prompts that the fuel tank is refueled. It is necessary to add a corresponding amount of additives, and perform data collection, display or alarm, detect the capacity of the ECU memory, and prompt the status of data collection and storage. 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 el...

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Abstract

The invention relates to a control system and a control method for a temperature raising device of an exhaust after-treatment device of a diesel engine. A traveling computer signal input end is respectively connected with a rotating speed signal output end of the diesel engine, a voltage-doubling signal output end of the exhaust after-treatment device of the diesel engine, a temperature signal output end of the temperature raising device of the exhaust after-treatment device, a signal output end of a gas storage tank pressure sensor in an air compressing device, the output end of an oil tank signal and the output end of an additive tank signal; the traveling computer signal output end is respectively connected with switch signal control ends of a mixed oil pump, an oil supply pump, multipath air valves and a temperature rise controller; the additive tank is communicated with an inlet of the mixed oil pump through a liquid delivery pipe; an outlet of the mixed oil pump is communicated with the oil tank through the liquid delivery pipe; the oil tank is communicated with an inlet of the oil supply pump through an oil delivery pipe; an outlet of the oil supply pump supplies oil to the temperature raising device of the exhaust after-treatment device through the oil delivery pipe; air inlets of the multipath air valves are connected in parallel and are communicated with a gas storage tank outlet in an air compressor; air outlets of the multipath air valves are communicated for supplying oxygen to the temperature raising device of the exhaust after-treatment device.

Description

technical field [0001] The invention relates to a diesel engine exhaust post-processing device temperature riser control system and control method for intelligently controlling the distribution of fuel and oxygen according to the working state of the diesel engine exhaust post-processing device and maintaining the combustion temperature at a set value by an ECU. It belongs to the field of diesel engine exhaust post-treatment device manufacturing and control method manufacturing. 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 burne...

Claims

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Application Information

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Patent Type & Authority Patents(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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