公开(公告)号：EP0774067A1

公开(公告)日：1997-05-21

申请号：EP96913222.0

申请日：1996-04-25

申请人： CATERPILLAR INC.

发明人： LOHMANN, Craig, W. ,  MILLER, Charles, R. ,  NAGARAJAN, Raj, T.

IPC分类号： F02M47 ,  F02M57 ,  F02M59 ,  F16K31 ,  F02M63

CPC分类号： F02M63/0017 ,  F02M47/025 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466 ,  F02M63/0029 ,  F02M63/004 ,  F02M63/0045 ,  F02M2200/21 ,  Y10T137/86614

摘要： A valve (90, 160) includes a housing (126) having a high pressure inlet (140, 166), a low pressure inlet (142, 168), an outlet (144, 170) and first and second sealing surfaces (152, 156). A pilot valve (93) is disposed in the housing (126) and includes a valve element (104) movable between first and second positions. A movable spool (118) is also disposed in the housing (126) and includes third and fourth sealing surfaces (150, 154) engageable with the first and second sealing surfaces (152, 156), respectively, carried by the housing (126) to connect the outlet (144, 170) to the low pressure inlet (142, 168) when the valve element (104) is in the first position and to connect the outlet (144, 170) to the high pressure inlet (140, 166) when the valve element (104) is in the second position.

公开(公告)号：EP0954685B1

公开(公告)日：2003-05-07

申请号：EP98957654.1

申请日：1998-11-09

申请人： CATERPILLAR INC.

发明人： MILLER, Charles, R. ,  WINKLER, John, W. ,  BERLINGER, Willibald, G.

IPC分类号： F02B25/04 ,  F02M57/04 ,  F02M57/02

CPC分类号： F02M57/04 ,  F02B25/04 ,  F02B2075/025 ,  F02M57/025

摘要： A two cycle engine (10, 110) comprises an engine casing (11, 113) that defines a hollow piston cavity (14, 114), a first gas passageway (17, 116) and a second gas passageway (16, 117). The hollow piston cavity (14, 114) is separated from the first gas passageway (17, 116) by a valve seat (19). A piston (15, 115) is positioned in the hollow piston cavity (14, 114) and is moveable between a top position in which the second gas passageway (16, 117) is blocked to the hollow piston cavity (14, 114), and a bottom position in which the second gas passageway (16, 117) is open to the hollow piston cavity (14, 114). A gas valve member (51) is positioned adjacent the valve seat (19) and is moveable between an open position and a closed position relative to the valve seat (19). The gas valve member (51) defines a nozzle outlet (80) that opens directly into the hollow piston cavity (14, 114). A needle valve member (55) is positioned in the gas valve member (51) and is moveable between an inject position in which the nozzle outlet (80) is open, and a blocked position in which the nozzle outlet (80) is blocked.

公开(公告)号：EP0774067B1

公开(公告)日：2001-06-06

申请号：EP96913222.4

申请日：1996-04-25

申请人： CATERPILLAR INC.

发明人： LOHMANN, Craig, W. ,  MILLER, Charles, R. ,  NAGARAJAN, Raj, T.

IPC分类号： F02M57/02 ,  F02M59/10 ,  F02M59/46

CPC分类号： F02M63/0017 ,  F02M47/025 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466 ,  F02M63/0029 ,  F02M63/004 ,  F02M63/0045 ,  F02M2200/21 ,  Y10T137/86614

公开(公告)号：EP1040257A1

公开(公告)日：2000-10-04

申请号：EP98953738.6

申请日：1998-10-20

申请人： CATERPILLAR INC.

发明人： MALONEY, Ronald, P. ,  MILLER, Charles, R.

IPC分类号： F01L1/28 ,  F02M57/04

CPC分类号： F01L1/28 ,  F02F1/002 ,  F02M57/04

摘要： A fuel injection system includes a hydraulically-actuated electronically-controlled fuel injector (45) having a needle valve member (55) and an injector body (50) that defines a fuel pressurization chamber (75) that opens to a nozzle outlet (80). The needle valve member (55) is positioned in the injector body (50) and is moveable between an inject position at which the nozzle outlet (80) is open, and a blocked position at which the nozzle outlet (80) is blocked. A portion of the injector body (50) adjacent the nozzle outlet (80) is a mono gas valve member (51). The movement of the gas valve member (51) controls one or both of the intake and exhaust portions of the engine cycle. The gas valve member (51) is also hydraulically-actuated and electronically-controlled by the same hydraulic actuator (46) that operates the fuel injector (50).

公开(公告)号：EP0954685A1

公开(公告)日：1999-11-10

申请号：EP98957654.0

申请日：1998-11-09

申请人： CATERPILLAR INC.

发明人： MILLER, Charles, R. ,  WINKLER, John, W. ,  BERLINGER, Willibald, G.

IPC分类号： F01L3 ,  F02B25 ,  F02F1 ,  F02M57 ,  F02B75

CPC分类号： F02M57/04 ,  F02B25/04 ,  F02B2075/025 ,  F02M57/025

摘要： A two cycle engine (10, 110) comprises an engine casing (11, 113) that defines a hollow piston cavity (14, 114), a first gas passageway (17, 116) and a second gas passageway (16, 117). The hollow piston cavity (14, 114) is separated from the first gas passageway (17, 116) by a valve seat (19). A piston (15, 115) is positioned in the hollow piston cavity (14, 114) and is moveable between a top position in which the second gas passageway (16, 117) is blocked to the hollow piston cavity (14, 114), and a bottom position in which the second gas passageway (16, 117) is open to the hollow piston cavity (14, 114). A gas valve member (51) is positioned adjacent the valve seat (19) and is moveable between an open position and a closed position relative to the valve seat (19). The gas valve member (51) defines a nozzle outlet (80) that opens directly into the hollow piston cavity (14, 114). A needle valve member (55) is positioned in the gas valve member (51) and is moveable between an inject position in which the nozzle outlet (80) is open, and a blocked position in which the nozzle outlet (80) is blocked.