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1. WO2020108566 - VALVE MECHANISM OF ENGINE WITH LOW-PRESSURE EGR SYSTEM AND CONTROL STRATEGY

Publication Number WO/2020/108566
Publication Date 04.06.2020
International Application No. PCT/CN2019/121624
International Filing Date 28.11.2019
IPC
F01L 1/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
18Rocking arms or levers
F01M 5/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING
5Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
02Conditioning lubricant for aiding engine starting, e.g. heating
F01L 1/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
14Tappets; Push-rods
CPC
F01L 1/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
14Tappets
F01L 1/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
18Rocking arms or levers
F01M 5/021
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
5Heating, cooling, or controlling temperature of lubricant
02Conditioning lubricant for aiding engine starting, e.g. heating
021by heating
Applicants
  • 长城汽车股份有限公司 GREAT WALL MOTOR COMPANY LIMITED [CN]/[CN]
Inventors
  • 崔亚彬 CUI, Yabin
  • 常进才 CHANG, Jincai
  • 李婧媛 LI, Jingyuan
  • 张帅 ZHANG, Shuai
  • 张卫国 ZHANG, Weiguo
Agents
  • 北京清亦华知识产权代理事务所(普通合伙) TSINGYIHUA INTELLECTUAL PROPERTY LLC
Priority Data
201811454515.330.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) VALVE MECHANISM OF ENGINE WITH LOW-PRESSURE EGR SYSTEM AND CONTROL STRATEGY
(FR) MÉCANISME DE SOUPAPE DE MOTEUR À SYSTÈME DE RECIRCULATION DES GAZ D'ÉCHAPPEMENT BASSE PRESSION ET STRATÉGIE DE COMMANDE
(ZH) 具有低压EGR系统的发动机的配气机构以及控制策略
Abstract
(EN)
Disclosed is a valve mechanism (100) of an engine with a low-pressure EGR system (200), comprising a swinging arm (110), a cam (120), and a valve (130). The peripheral edge of the cam (120) abuts against the swinging arm (110) so as to push the swinging arm (110) to move downwards during rotation of the cam (120); the valve (130) is arranged on the swinging arm (110) so as to move along with the swinging arm (110); and the swinging arm (110) is also provided with a driving piece, and the driving piece is used for driving the valve (130) to move relative to the swinging arm (110). Further provided is a control strategy. The valve mechanism can improve the combustion stability of the engine during cold-engine starting.
(FR)
L'invention concerne un mécanisme de soupape (100) d'un moteur à système de recirculation des gaz d'échappement basse pression (200), comprenant un bras oscillant (110), une came (120) et une soupape (130). Le bord périphérique de la came (120) vient en butée contre le bras oscillant (110) de façon à pousser le bras oscillant (110) afin qu'il se déplace vers le bas pendant la rotation de la came (120) ; la soupape (130) est disposée sur le bras oscillant (110) de manière à se déplacer avec le bras oscillant (110) ; et le bras oscillant (110) est également pourvu d'une pièce d'entraînement, celle-ci servant à entraîner la soupape (130) afin qu'elle se déplace par rapport au bras oscillant (110). L'invention concerne également une stratégie de commande. Le mécanisme de soupape peut améliorer la stabilité de combustion du moteur pendant le démarrage à froid du moteur.
(ZH)
一种具有低压EGR系统(200)的发动机的配气机构(100),包括:摇臂(110)、凸轮(120)和气门(130),凸轮(120)的外周缘与摇臂(110)止抵以在凸轮(120)转动时推动摇臂(110)下移;气门(130)设置在摇臂(110)上以随摇臂(110)一起移动;其中,摇臂(110)上还设置有驱动件,驱动件适于驱动气门(130)相对摇臂(110)移动。还提供一种控制策略。该配气机构能提高发动机在冷机启动时的燃烧稳定性。
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