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Low discharging system of diesel engine used not on road

A diesel engine and low-emission technology, applied in the direction of charging system, mechanical equipment, engine components, etc., can solve the problems affecting the reliability of electronically controlled diesel engines, rising manufacturing and maintenance costs, and harsh working environments

Inactive Publication Date: 2009-08-19
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of electronically controlled fuel system to non-road diesel engines will greatly increase the cost of manufacturing and maintenance, and the working environment of non-road diesel engines such as construction machinery is relatively harsh, which affects the reliability of electronically controlled diesel engines

Method used

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  • Low discharging system of diesel engine used not on road

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Embodiment Construction

[0011] As shown in the accompanying drawings, the low-emission system for non-road diesel engines includes a main engine 6 equipped with an in-line pump. The main engine 6 of the diesel engine is provided with an exhaust passage 1 through which the combustion chamber of the diesel engine can be combusted to form a It also includes the exhaust gas circulation system (referred to as EGR), in which the exhaust gas recirculation system is a cooled exhaust gas recirculation system or a non-cooled exhaust gas recirculation system, and the exhaust gas is sent to the combustion chamber of the diesel engine through the exhaust gas circulation system for recirculation Combustion reduces the amount of nitrogen oxides produced.

[0012] Among them, the exhaust gas circulation system includes the exhaust gas recirculation pipeline 2, through which the exhaust gas can be recycled, and the combustion temperature in the combustion chamber can be reduced by sending the exhaust gas into the comb...

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Abstract

The invention discloses a low-emission system of a non-road diesel engine, comprising a main engine of a diesel engine equipped with an in-line pump and a gas recirculation system; wherein, the main engine of the diesel engine is provided with an exhaust passage used for exhausting waste gas in a combustion chamber; the gas recirculation system is used for transporting waste gas to the combustion chamber. The low-emission system has simple structure, convenient control and low manufacturing cost, is more suitable for the working conditions of the non-road diesel engine and can reduce the generation of nitrogen oxide, thus realizing least nitrogen oxide in the waste gas and meeting the stricter emission standard.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to an exhaust system for off-road diesel engines. Background technique [0002] With the improvement of the emission level of non-road diesel engines, the resources consumed and the pollutants discharged by a large number of non-road mobile equipment have produced an inestimable load on the environment. Non-road equipment mainly includes construction machinery, agricultural machinery, and forestry machinery. and airport ground handling equipment. Although non-road equipment has not yet been included in the ranks of motor vehicles with restricted emissions, as large and medium-sized cities at home and abroad pay more and more attention to urban environmental protection, the restrictions on indicators such as smoke and noise of motor vehicle exhaust emissions are becoming more and more serious. The more stringent, especially with the use of mobile non-road equipment such as lo...

Claims

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Application Information

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IPC IPC(8): F02M25/07F02M26/13
CPCY02T10/121Y02T10/12
Inventor 张纪元钟鲁魏红玲刘伟达范委修
Owner WEICHAI POWER CO LTD
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