摘要 |
A multiple step valve opening control system, particularly for an EGR control valve unit, having a plurality of valve lifts. The system comprises a valve member (16) for opening a fluid passage (14) in multiple steps, a first piston (26) slidably housed in a housing (12), a second cylinder (28) substantially coaxial with the first piston (26), a second piston (30) fitted in the second cylinder (26) and coupled to the valve member (16), and a first piston stroke regulating member (46) which is moved selectively to a first position for regulating an allowable displacement of the first piston (26) to a first predetermined extent (l1) or to a second position for regulating the allowable displacement of the first piston (26) to the first predetermined first extent (l1) plus a third predetermined extent (l3). By changing the position of the first piston displacement regulating member (46), the valve member (16) is opened by various valve lifts. <IMAGE> |
申请人 |
MITSUBISHI JIDOSHA KOGYO K.K., TOKIO/TOKYO, JP |
发明人 |
JYOUTAKI, HIROSHI, C/O MITSUBISHI JIDOSHA KOGYO KK, TOKYO, JP;MORI, KAZUTOSHI, C/O MITSUBISHI JIDOSHA KOGYO K.K., TOKYO, JP;KOHKETSU, SUSUMU, C/O MITSUBISHI JIDOSHA KOGYO K.K, TOKYO, JP;YAMAKI, YOSHIHISA, C/O MITSUBISHI JIDOSHA KOGYO KK, TOKYO, JP;DAIGO, YASUNORI, C/O MITSUBISHI JIDOSHA KOGYO K.K., TOKYO, JP |