公开(公告)号：EP2470772A1

公开(公告)日：2012-07-04

申请号：EP10745289.8

申请日：2010-06-22

申请人： Renault S.A.S.

发明人： AGNERAY, André ,  MALEK, Nadim ,  LEVIN, Laurent

IPC分类号： F02M61/14 ,  F02M69/04

CPC分类号： F02M69/041 ,  F02M61/14

摘要： The invention relates to a device for injecting fuel over a cylinder head (2) of an engine, comprising a tubular body (11), an injection nozzle (13) forming an extension of the tubular body (11), a needle (12) extending coaxially to the nozzle (13) in the form of a rod, an end of which comprises a head (120) forming a valve on a seat (130) supported by the injection nozzle (13), an actuator (10) being capable of causing a movement of the head (120) so as to open the valve, the needle (12) being capable of axially resonating when the same is subjected to axial pulses at a predetermined nominal frequency by the actuator (10). A system for mounting the device comprises a spacer (3) for bearing on the cylinder head (2), as well as on a front surface (113) of the tubular body (11) at the connection to the nozzle (13).

摘要翻译： 本发明涉及一种用于在发动机的气缸盖（2）上喷射燃料的装置，包括管状体（11），形成管状体（11）的延伸部的喷嘴（13），针（12） （13）同轴地延伸到喷嘴（13），所述喷嘴的一端包括在由所述喷嘴（13）支撑的座（130）上形成阀的头部（120），致动器（10） （120）的运动以打开所述阀，当所述针（12）由所述致动器（10）经受预定标称频率的轴向脉冲时，所述针（12）能够轴向共振。 用于安装该装置的系统包括用于支承在气缸盖（2）上的间隔件（3），以及在与喷嘴（13）的连接处的管状体（11）的前表面（113）上。

公开(公告)号：EP2391815A1

公开(公告)日：2011-12-07

申请号：EP10707599.6

申请日：2010-01-27

申请人： Renault s.a.s.

发明人： LEVIN, Laurent ,  MALEK, Nadim

IPC分类号： F02M51/06 ,  F02M61/08 ,  F02M61/16 ,  F02M63/00

CPC分类号： F02M51/0603 ,  F02M61/08 ,  F02M61/167 ,  F02M2200/705

摘要： The invention relates to a liquid injection device that comprises a tubular body (11), a needle (12) having an end with a head (120) defining a valve on a seat (110) of the tubular body (11). An actuator with an electroactive material is capable of triggering a movement of the head (120) of the needle (12) so as to open the valve. A supply duct (111) supplies the liquid about the needle (12) up to the head (120). A hydraulic chamber (17) is defined by an actuator piston (101) moved by the actuator (10) and a needle piston (121), the needle piston (121) being carried by the end of the needle (12) opposite the head (120). The hydraulic chamber (17) is supplied with fluid by the supply duct (111) via a capillary (18).

公开(公告)号：EP1336050B1

公开(公告)日：2004-07-07

申请号：EP01980605.8

申请日：2001-10-19

申请人： Renault s.a.s.

发明人： AGNERAY, André ,  LEVIN, Laurent

IPC分类号： F02M69/04 ,  F02M51/06 ,  F02M61/08 ,  F02M61/16

CPC分类号： F02M61/167 ,  F02M51/0603 ,  F02M61/08 ,  F02M69/041

摘要： The invention concerns a fuel injecting device comprising an injection housing supplied with fuel terminated with a cylindrical nozzle (3) at the end of which is provided an injection orifice, a cyclic vibrating transducer (1) arranged inside the housing, and closure means (7), arranged at the end of the nozzle (3), and returned by elastic return means against said end, the elastic return means consisting of a rod (4) passing through, at least partly, the injection device body up to a zone where said rod (4) is integral with the transducer (1) and securing the closure means (7) to the transducer (1), and damping means (9) for the resulting integral assembly formed by the transducer (1), the rod (4) and the closure means (7), such that the closure means (7) are returned against the end of the nozzle (3).

公开(公告)号：EP1248904A1

公开(公告)日：2002-10-16

申请号：EP00981424.5

申请日：2000-11-17

申请人： Renault s.a.s.

发明人： AGNERAY, André ,  LEVIN, Laurent

IPC分类号： F02M69/04 ,  B05B17/06 ,  F02M51/06 ,  F02M61/08

CPC分类号： F02M69/041 ,  F02M51/0603 ,  F02M2200/306

摘要： The invention concerns a fuel injection device for an internal combustion engine comprising an injector, characterised in that said injector is arranged in the injection orifice (5), means for causing the nozzle (3) to vibrate cyclically such as a transducer (1) controlled in duration and in intensity by the engine electronic control system, and closure means (7) returned by elastic return means against the end (6) of the nozzle (3), said elastic return means being formed by a rod (4) passing through the injector body up to a cavity (10) located at the opposite end relative to the injection orifice (5), said rod co-operating with a chassis ground (8) and damping means (9) housed in said cavity (10), the vibrating of the nozzle (3) and the closure means (7) ensuring the ejection of a predetermined amount of fuel.