公开(公告)号：US5230312A

公开(公告)日：1993-07-27

申请号：US962719

申请日：1992-10-19

申请人： Toyokazu Baika ,  Norihiko Nakamura ,  Tadashi Fukuyama ,  Takeshi Sato ,  Koichi Nakae

发明人： Toyokazu Baika ,  Norihiko Nakamura ,  Tadashi Fukuyama ,  Takeshi Sato ,  Koichi Nakae

IPC分类号： F01L1/38 ,  F02B1/04 ,  F02B3/06 ,  F02B19/08 ,  F02B23/00 ,  F02B25/14 ,  F02B25/26 ,  F02B75/02 ,  F02F1/24 ,  F02F1/42

CPC分类号： F02B25/145 ,  F02F1/4221 ,  F02B1/04 ,  F02B2075/025 ,  F02B2275/18 ,  F02B3/06 ,  F02F2001/245

摘要： A two-stroke engine comprising three exhaust valves and two intake valves. These exhaust valves and these intake valves are arranged on the peripheral portion of the inner wall of the cylinder head, and one additional intake valve is arranged on the central portion of the inner wall of the cylinder head. The valve openings of the three intake valves, which are located on the exhaust valves side, are masked by the masking walls. The central portion of the combustion chamber is scavenged by the fresh air fed from the additional intake valve, and the peripheral portion of the combustion chamber is scavenged by the fresh air fed from the remaining two intake valves.

公开(公告)号：US5125380A

公开(公告)日：1992-06-30

申请号：US731252

申请日：1991-07-17

申请人： Koichi Nakae ,  Tadashi Fukuyama ,  Toyokazu Baika ,  Takeshi Sato ,  Michio Kawagoe, deceased

发明人： Koichi Nakae ,  Tadashi Fukuyama ,  Toyokazu Baika ,  Takeshi Sato ,  Michio Kawagoe, deceased

IPC分类号： F02B3/06 ,  F02B25/14 ,  F02B75/02 ,  F02F1/24 ,  F02F1/42

CPC分类号： F02F1/4221 ,  F02B25/145 ,  F02B2075/025 ,  F02B2275/16 ,  F02B3/06 ,  F02F2001/245 ,  F02F2001/247 ,  Y02T10/123

摘要： A two-stroke diesel engine comprising a pair of intake valves arranged on one side of the inner wall of the cylinder head, and a pair of exhaust valves arranged on the other side of the inner wall of the cylinder head. The valve openings of the intake valves, which are located on the exhaust valve side, are covered by corresponding masking walls. A prechamber is formed in the cylinder head, and the opening of the prechamber is arranged in the peripheral inner wall portion of the cylinder head, which is positioned farthest from the exhaust valves, between the intake valves.

公开(公告)号：US5033443A

公开(公告)日：1991-07-23

申请号：US371225

申请日：1989-06-26

申请人： Akira Kato ,  Koji Nagata ,  Zenji Kuwabara ,  Terutada Kojima ,  Takashi Yamaguchi ,  Takaaki Ohashi ,  Masato Hattori ,  Noriyosi Toyoda ,  Noriaki Kawai ,  Teruo Sato ,  Toshio Fujimura ,  Tadashi Watanabe ,  Mitsumasa Yamada ,  Tadashi Fukuyama ,  Takeshi Sato

发明人： Akira Kato ,  Koji Nagata ,  Zenji Kuwabara ,  Terutada Kojima ,  Takashi Yamaguchi ,  Takaaki Ohashi ,  Masato Hattori ,  Noriyosi Toyoda ,  Noriaki Kawai ,  Teruo Sato ,  Toshio Fujimura ,  Tadashi Watanabe ,  Mitsumasa Yamada ,  Tadashi Fukuyama ,  Takeshi Sato

IPC分类号： F02M41/12 ,  F02M45/06 ,  F02M37/04

CPC分类号： F02M41/126 ,  F02M45/06

摘要： A pilot injection device for a fuel injection pump has an accumulate piston movable in response to a fuel pressure from a pressurizing chamber of the fuel injection pump to cause a pilot injection prior to a main injection by the pump. The device is provided with a back-pressure chamber filled with fuel and having a volume variable by the movement of the accumulate piston. Air trapped in the back-pressure chamber can be removed therefrom through a hole to improve the operation characteristic of the pilot injection device.