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Engine assembly with EGR system and vehicle

An engine assembly and engine technology, applied in engine components, machine/engine, engine cooling, etc., can solve problems affecting engine life, increase friction between piston and cylinder wall, increase friction of valve seat ring, etc., and achieve long practical life , Avoid increased friction and prolong service life

Inactive Publication Date: 2020-06-09
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the exhaust gas is cooled at a low temperature, water droplets will form. If water enters the engine in liquid form, it will increase the friction of the valve seat ring, increase the friction between the piston and the cylinder wall, and affect the life of the engine.

Method used

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  • Engine assembly with EGR system and vehicle
  • Engine assembly with EGR system and vehicle
  • Engine assembly with EGR system and vehicle

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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0035] The EGR system is the exhaust gas recirculation system of the vehicle. After the fuel is burned in the engine, part of the exhaust gas produced is catalyzed and discharged into the atmosphere, and the other part of the exhaust gas will enter the engine after being re-pressurized. Recombustion can be carried out in the cylinders of the engine to reduce the nitrogen oxides (NOx) in the exhaust gas to reduce the emission of pollutants.

[0036] Refer below figure 1 An engine assembly 100 with a low pressure EGR system according to a...

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Abstract

The invention discloses an engine assembly with an EGR system and a vehicle. The engine assembly comprises an engine and a cooler, wherein the engine is provided with a throttle valve and an exhaust manifold; the cooler is provided with a cooler air inlet and a cooler air outlet; the cooler air inlet is connected with the exhaust manifold; the cooler air outlet is connected with the throttle valve; and the cooler is suitable for cooling at least part of exhaust gas discharged from the exhaust manifold so as to make moisture separated out of the exhaust gas and lead the separated moisture intoa cylinder body of the engine. According to the engine assembly with the EGR system, the condensed water can be fully separated out in the cooling process of the exhaust gas, so that no more water isseparated out before the exhaust gas enters the engine; and the collected cooling water enters the engine in a gas form, so that the combustion of the engine at a small load is facilitated, the liquidwater is effectively prevented from entering the engine, and the combustion efficiency of the engine is improved.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to an engine assembly with an EGR system and a vehicle. Background technique [0002] The engine EGR system is external EGR, which leads the exhaust gas after the catalytic converter to the front of the intake supercharger, and needs to pass through the supercharger, the intake air intercooler and the throttle valve to enter the engine cylinder. After the exhaust gas is cooled by the intercooler, a lot of water will be precipitated. The cold EGR has a temperature below 40°C at its cooler outlet. Much lower than conventional EGR70-150°C. However, after the exhaust gas is cooled at a low temperature, water droplets will form. If water enters the engine in liquid form, it will increase the friction of the valve seat ring, increase the friction between the piston and the cylinder wall, and affect the life of the engine. Contents of the invention [0003] The present invention aims to solve ...

Claims

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Application Information

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IPC IPC(8): F02M26/06F02M26/28F02M26/32F02M26/35F01P3/02
CPCF01P3/02F01P2003/021F02M26/06F02M26/28F02M26/32F02M26/35
Inventor 崔亚彬宋东先马京卫刘亚奇
Owner GREAT WALL MOTOR CO LTD
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