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1. (EP3150839) FUEL INJECTOR

专利局 : 欧洲专利局 (EPO)
申请号: 16190307 申请日: 23.09.2016
公布号: 3150839 公布日: 05.04.2017
公布类型: B1
指定国: AL, AT, BA, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
国际专利分类:
F02M 47/02
F02M 61/20
F02M 63/00
F 机械工程;照明;加热;武器;爆破
02
燃烧发动机;热气或燃烧生成物的发动机装置
M
汽化器,燃料喷射
47
用受流体压力而动作的燃料喷射阀进行循环动作的燃料喷射装置
02
贮蓄喷射器型的,即贮压器的燃料压力用于开启喷射阀,其他室中的燃料压力用于关闭喷射阀,以及具有将该关闭阀的压力周期性释放的装置
F 机械工程;照明;加热;武器;爆破
02
燃烧发动机;热气或燃烧生成物的发动机装置
M
汽化器,燃料喷射
61
不包含在组F02M 39/00至F02M 57/00或F02M 67/00中的燃料喷射器
16
不包含在组F02M 61/02至F02M 61/14的装置中或与之无关的零件
20
机械关闭阀,如弹簧装置或配重
F 机械工程;照明;加热;武器;爆破
02
燃烧发动机;热气或燃烧生成物的发动机装置
M
汽化器,燃料喷射
63
具有不包含在组F02M 39/00至F02M 57/00或F02M 67/00中的有关特征的其他燃料喷射装置;不包含在组F02M 39/00至F02M 61/00或F02M 67/00的装置中的或与之无关的燃料喷射装置的零件、部件或附件
CPC:
F02M 47/027
F02M 61/20
F02M 63/0029
F02M 63/0045
F02M 2200/28
申请人: DELPHI INT OPERATIONS LUXEMBOURG SARL
发明人: THIBAULT THIERRY
RODIER NICOLAS
优先权数据: 201517148 29.09.2015 GB
标题: (DE) KRAFTSTOFFEINSPRITZVENTIL
(EN) FUEL INJECTOR
(FR) INJECTEUR DE CARBURANT
摘要: front page image
(EN) A fuel injector (10) for a compression ignition internal combustion engine is described. The fuel injector (10) comprises a fuel injection valve having an injection valve member (14) moveable, in use, under the influence of fuel pressure within a control chamber (20) acting upon it, between a closed position and an open position. The fuel injector comprises a moveable plate (28) located inside the control chamber (20). The moveable plate (28) is configured to move into and out of contact with a sealing surface (34) of the control chamber (20). The moveable plate (28) includes an inlet orifice (38) and a spill orifice (40). The provision of inlet and spill orifices (38, 40) in the moveable plate allows both orifices to be made very small, resulting in a significant reduction in dynamic leakage. An embodiment of the invention is described in which the moveable plate (28) defines additional fluid channels (60a, 60b, 62a, 62) for high pressure fuel entering the control chamber (20) when the moveable plate (28) is moved out of sealing contact with the sealing surface (34) of the control chamber (20). The additional flow paths allow high pressure fuel to enter the control chamber (20) bypassing the inlet orifice, resulting in a rapid termination of an injection event.