公开(公告)号：DE69232330D1

公开(公告)日：2002-02-07

申请号：DE69232330

申请日：1992-08-27

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F01L1/26 ,  F02B1/04 ,  F02B3/06 ,  F02B23/08 ,  F02B31/00 ,  F02B33/44 ,  F02B47/08 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D21/08 ,  F02F1/24 ,  F02F1/42 ,  F02B75/20 ,  F02B33/34

Abstract: An internal combustion engine with a supercharger with a piston arranged to be inserted into a cylinder so as to move in a reciprocating way, which has a bore size of the cylinder ranging from approximately 43 mm to 67 mm; a volume of a single chamber of the cylinder ranging from approximately 110 cc to 400 cc; a ratio of a stroke of the piston to the bore size of the cylinder being larger than 1; and a compression ratio of the engine being 9 or larger.

公开(公告)号：DE69214234D1

公开(公告)日：1996-11-07

申请号：DE69214234

申请日：1992-08-27

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F01L1/26 ,  F02B1/04 ,  F02B3/06 ,  F02B23/08 ,  F02B31/00 ,  F02B33/44 ,  F02B47/08 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D21/08 ,  F02F1/24 ,  F02F1/42 ,  F01L1/34

Abstract: An internal combustion engine with a supercharger with a piston arranged to be inserted into a cylinder so as to move in a reciprocating way, which has a bore size of the cylinder ranging from approximately 43 mm to 67 mm; a volume of a single chamber of the cylinder ranging from approximately 110 cc to 400 cc; a ratio of a stroke of the piston to the bore size of the cylinder being larger than 1; and a compression ratio of the engine being 9 or larger.

公开(公告)号：DE69202408T2

公开(公告)日：1995-09-14

申请号：DE69202408

申请日：1992-06-26

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F02B19/02 ,  F02B75/02

Abstract: The engine (1) is provided with an auxiliary chamber (20) having an auxiliary chamber port (20a) with an opening communicated with the combustion chamber (4). The auxiliary chamber port (20a) is arranged to be opened or closed with an auxiliary chamber valve (21). The timing of closing the auxiliary chamber valve (21) is in between a final stage of compression stroke in which the temperature within the cylinder (4) becomes higher and an initial stage of explosion stroke. On the other hand, the timing of opening the auxiliary chamber valve (21) is in a middle stage of the compression stroke, thereby allowing the mixed fuel cooled in the auxiliary chamber (20a) to be replaced with a portion of the mixed fuel in the combustion chamber (4), thereby lowering the temperature within the cylinder (2).

公开(公告)号：DE69202408D1

公开(公告)日：1995-06-14

申请号：DE69202408

申请日：1992-06-26

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F02B19/02 ,  F02B75/02

Abstract: The engine (1) is provided with an auxiliary chamber (20) having an auxiliary chamber port (20a) with an opening communicated with the combustion chamber (4). The auxiliary chamber port (20a) is arranged to be opened or closed with an auxiliary chamber valve (21). The timing of closing the auxiliary chamber valve (21) is in between a final stage of compression stroke in which the temperature within the cylinder (4) becomes higher and an initial stage of explosion stroke. On the other hand, the timing of opening the auxiliary chamber valve (21) is in a middle stage of the compression stroke, thereby allowing the mixed fuel cooled in the auxiliary chamber (20a) to be replaced with a portion of the mixed fuel in the combustion chamber (4), thereby lowering the temperature within the cylinder (2).

公开(公告)号：DE4208725C2

公开(公告)日：1995-02-16

申请号：DE4208725

申请日：1992-03-18

Applicant: MAZDA MOTOR

Inventor： YAMAGATA NAOYUKI ,  IWATA NORIYUKI ,  KASHIYAMA KENJI ,  NORMURA KAZUMASA

IPC: F02B23/08 ,  F01L1/26 ,  F01P3/02 ,  F02B1/04 ,  F02F1/24 ,  F02F1/38 ,  F02F1/42

Abstract: An engine with a row of cylinders is provided with two intake ports and intake valves and two exhaust ports and exhaust valves for each cylinder. The intake ports are arranged on one side of a center line of the row of cylinders, adjacent to each other, and side by side in a direction parallel to the cylinder row. The exhaust ports are arranged on another side of the center line, adjacent to each other, and side by side in the direction parallel to the cylinder row so that their centers are located at a distance apart which is larger than a distance at which centers of the intake ports are separated. The cylinder is formed with a "squish" surface between the exhaust ports which provides a squish area between the cylinder head and piston. This produces a squish or compressed flow of the air-fuel mixture to the exhaust ports in the combustion chamber.

公开(公告)号：DE4232456C2

公开(公告)日：1994-11-24

申请号：DE4232456

申请日：1992-09-28

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU ,  IWATA NORIYUKI ,  YAMAGATA NAOYUKI

IPC: F02B75/18 ,  F02B75/22 ,  F02D21/08 ,  F02D41/00 ,  F02M25/06 ,  F02M25/07 ,  F02M69/04 ,  F02D23/00 ,  F02D41/10 ,  F02D37/00 ,  F02M31/20 ,  F02D43/00 ,  F02D45/00

Abstract: The supercharged internal combustion engine is so adapted as to set the air-fuel ratio to become a lean air-fuel ratio which is leaner than stoichiometric and lean enough to maximize improvements in a rate of consumption of fuel, for example, to the A/F ratio of 16, when the supercharger exists in such a supercharging region as demonstrating its sufficient degree of supercharging capability. When the air-fuel ratio is made lean in the supercharging region, exhaust gases are recirculated into the intake system of the engine, in addition to a mixed fuel. Preferably, the exhaust gases having lower temperatures are recirculated at the time of a high load of the engine in the supercharging region, while the exhaust gases having higher temperatures are recirculated at the time of a low load of the engine therein.

公开(公告)号：DE69133098D1

公开(公告)日：2002-10-02

申请号：DE69133098

申请日：1991-11-05

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSO U ,  UMEZAWA KAZUAKI ,  KAIDE TADAYOSHI ,  IWATA NORIYUKI ,  YAMAGATA NAOYUKI ,  NOMURA KAZUMASA

IPC: F02D21/08 ,  F02M25/07

Abstract: Disclosed is an exhaust gas recirculation system for an engine having a high compression ratio or with a supercharger. An outside EGR duct connecting the exhaust system to the intake system is provided with a first control valve, which has a second outside EGR duct bypassing the first control valve. The second EGR duct has a second EGR control valve and a cooler. When the engine exists in an extremely low load state, the first and second control valves are closed to inhibit the outside EGR. In the light load state, the first control valve is opened while the second control valve is closed, thereby allowing recirculation of the EGR gases having high temperature and reducing the pumping loss. In the high load state, the first control valve is being closed while opening the second control valve, thereby increasing a recirculation ratio of EGR gases cooled by the cooler and performing both an improvement of anti-knocking performance and a decrease in pumping loss, as well as reducing the heat load of the exhaust system and within the engine.

公开(公告)号：DE69231665D1

公开(公告)日：2001-03-01

申请号：DE69231665

申请日：1992-08-27

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHINJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F01L1/26 ,  F01L1/34 ,  F02B1/04 ,  F02B23/08 ,  F02B41/02 ,  F02B47/08 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D15/04 ,  F02F1/42 ,  F02B41/00

Abstract: Semention concerns spark ignition type reciprocating engine of a natural intake system with an ignition plug disposed to face a combustion chamber defined and delimited by a piston inserted into a cylinder so as to move in a reciprocating way, comprising: a means for reducing an effective compression ratio in a region where a load of an engine is lower; wherein a compression ratio of the engine is at least 11; and wherein a ratio of a stroke of the piston to a bore size is larger than 1.

公开(公告)号：DE69206718D1

公开(公告)日：1996-01-25

申请号：DE69206718

申请日：1992-08-27

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHINJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F01L1/26 ,  F01L1/34 ,  F02B1/04 ,  F02B23/08 ,  F02B41/02 ,  F02B47/08 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D15/04 ,  F02F1/42

Abstract: Semention concerns spark ignition type reciprocating engine of a natural intake system with an ignition plug disposed to face a combustion chamber defined and delimited by a piston inserted into a cylinder so as to move in a reciprocating way, comprising: a means for reducing an effective compression ratio in a region where a load of an engine is lower; wherein a compression ratio of the engine is at least 11; and wherein a ratio of a stroke of the piston to a bore size is larger than 1.

公开(公告)号：DE4232044A1

公开(公告)日：1993-04-08

申请号：DE4232044

申请日：1992-09-24

Applicant: MAZDA MOTOR

Inventor： HITOMI MITSUO ,  MASUDA SHUNJI ,  HATTORI TOSHIHIKO ,  KASHIYAMA KENJI ,  SASAKI JUNSOU

IPC: F02B1/04 ,  F02B27/02 ,  F02B29/04 ,  F02B33/36 ,  F02B33/44 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D15/04 ,  F02D41/00 ,  F02M25/07

Abstract: The engine operates with an air to fuel ratio of between 16:1 to 13:1, with the latter representing the richer mixture for cold starting. When the engine torque requirement is higher than a set level the mixture is set at a stoichiometric value. To prevent undue rise in temperature of the valves and of the exhaust system, a set proportion of exhaust gasses are recycled to the inlet manifold. The rate of recycling depends on the engine torque. The recycled gasses pass through a first cooler before entering the inlet manifold. For turbocharged inlet manifolds a second cooler is set behind the compressor. ADVANTAGE - Improved engine management, no high temperatures in valves and in exhaust system.