Urea liquid supply module used for high-pressure vehicles and integrating liquid level sensor

A liquid level sensor, vehicle urea technology, applied in the direction of machine/engine, exhaust treatment, mechanical equipment, etc., can solve the problems of urea loss, personal injury, expensive pipeline and filter cost, etc., to prevent high-speed jet flow , high security effect

Active Publication Date: 2017-01-04
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When dismantling when there is air pressure in the urea tank, the unreasonable fixing structure is likely to hurt the dismantler
[0006] The system requires a urea filter to filter the urea solution, but the pipeline of the external filter is complicated
At the same time, urea solution freezes in winter and n

Method used

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  • Urea liquid supply module used for high-pressure vehicles and integrating liquid level sensor

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Embodiment 1

[0022] like figure 1 As shown, the urea supply module in this embodiment includes water inlet 1, electrical interface 2, water outlet 3, air inlet 4, urea outlet 5, exhaust port 6, cooling water pipe 7, liquid level and temperature sensor 8. Urea supply pipe 9, filter clamp 10, filter 11, flange 12, O-ring 13, damping hole 14. The water inlet 1, the electrical interface 2, the water outlet 3, the air inlet 4, the urea outlet 5 and the exhaust port 6 are all arranged on the flange 12; the flange 12 can seal the mouth of the urea tank, and pass through The sealing ring 13 realizes axial sealing;

[0023] Wherein, the urea liquid outlet 5 is connected with the urea liquid supply pipe 9, and the other end of the urea liquid supply pipe 9 is fixedly connected with the filter 11 at the bottom position of the urea tank through the filter clamp 10; The hot water pipe 7 and the two ends of the heat exchange pipe 7 are respectively connected to the water inlet 1 and the water outlet 3...

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Abstract

The invention discloses a urea liquid supply module used for high-pressure vehicles and integrating a liquid level sensor, belongs to the field of after treatment of automobile exhaust and aims to solve the problems that existing urea supply modules are unreasonable in structure and can harm disassembling persons easily during disassemble under air pressure and external filter pipelines are complex. The urea liquid supply module for the vehicles integrates a urea heat exchange water pipe, a gas inlet port, an exhaust port, a liquid supply pipe and a filter, integrates a urea liquid level and a urea temperature sensing signal and can resist the pressure of compressed gas of the whole vehicle chassis. The high-accuracy replaceable urea liquid filter is integrated and installed at a liquid inlet end of a urea liquid supply pipe. A damping hole is formed in an inlet of the liquid supply pipe to prevent high-speed jet of urea, and the safety is very high.

Description

technical field [0001] The invention belongs to the field of after-treatment of automobile exhaust. Background technique [0002] With the implementation of the National IV emission regulations for commercial vehicles, the vehicle must be equipped with after-treatment devices for nitrogen oxide (NOx) emissions. [0003] Selective catalytic conversion (SCR) technology is commonly used in China's medium and heavy-duty diesel engines, that is, the standard vehicle urea aqueous solution is injected into the exhaust, and the ammonia gas (NH 3 ) for selective catalytic reduction of NOx to produce harmless nitrogen (N 2 ) and water (H 2 O). [0004] The air-driven urea injection system is a system in which the urea tank accumulates air pressure to provide injection pressure. [0005] The urea supply module is installed on the urea tank of the gas drive system to provide urea liquid level and temperature signals, and integrate gas and liquid interfaces, which require good airtig...

Claims

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Application Information

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IPC IPC(8): F01N3/20
CPCF01N3/206F01N3/2073F01N2610/02F01N2610/14F01N2610/1406F01N2610/1426F01N2610/148F01N2610/1486Y02A50/20
Inventor 贾昭远邢喜春戈非朱宏志尹燕升李冠霖
Owner CHINA FIRST AUTOMOBILE
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