公开(公告)号：JPH01138319A

公开(公告)日：1989-05-31

申请号：JP29598387

申请日：1987-11-26

Applicant: TOYOTA MOTOR CORP

Inventor： TANAHASHI TOSHIO ,  ITO TOSHIO ,  ITO KAZUHIRO ,  KANAMARU MASANOBU

IPC: F02M61/14 ,  F02B25/00 ,  F02B25/20 ,  F02B75/02

Abstract: PURPOSE:To secure both satisfactory ignition with combustion accompanied and high output power while the blowby of fuel is being prevented by providing both a fuel injection valve which ignites fuel after an intake valve, an exhaust valve and a scavenge port have been closed respectively, and a scavenge control valve opening at the time of high load respectively. CONSTITUTION:A two cycle internal combustion engine includes an intake valve 6 and an exhaust valve 8, and is concurrently formed with a scavenge port 10 driven in such a way as to be opened/closed in the inner wall surface 11 of a cylinder 3 by a piston 2. And the scavenge port 10 together with an intake port 7 is connected with a mechanical super charger 13 via a throttle valve 12. In this case, a scavenge control valve 15 which is controlled to be opened/closed by an actuator 14 is arranged within the scavenge port 10. In addition, a fuel injection valve 16 is arranged in the inner wall surface 11 of a cylinder head at the opposite side of an ignition plug 5 with respect to the intake valve 6. This constitution allows both satisfactory ignition with combustion accompanied at the time of low load and high output power at the time of high load to be secured respectively while the blowby of fuel is being prevented.

公开(公告)号：JPH01134067A

公开(公告)日：1989-05-26

申请号：JP29198087

申请日：1987-11-20

Applicant: TOYOTA MOTOR CORP

Inventor： TANAHASHI TOSHIO ,  ITO TOSHIO ,  KANAMARU MASANOBU ,  ITO KAZUHIRO ,  TSUTSUMI YASUHITO

IPC: F02B25/00 ,  F02B25/20 ,  F02B75/02 ,  F02M69/04 ,  F02M69/10

Abstract: PURPOSE:To prevent any blow-by of fuel from occurring as well as to secure good loop scavenging by installing a mask wall for covering an opening being formed between an intake valve and its valve seat, while spraying the fuel in the orthogonal direction with a line connecting the intake valve to an exhaust valve. CONSTITUTION:A concave groove 5 is formed in an inner wall surface 3a of a cylinder head 3, thereby forming a part 3b constituting a bottom wall surface of this concave groove 5 and a part 3c protruding toward a combustion chamber 4 from this part 3b. Then, these parts 3b and 3c are connected to each other via a peripheral wall 8 of the concave groove 5, while an intake valve 6 and an exhaust valve 7 are set up each at both sides of the concave groove 5. In addition, the peripheral wall 8 is made up of a mask wall 8a or the like extending in circular form along a peripheral edge of this intake valve 6. Moreover, a pair of fuel injection valves 13, 14 are set up in an inlet port 10, while fuel is sprayed from these fuel injection valves 13, 14 in the orthogonal direction with a line connecting the intake valve 6 to the exhaust valve 7 at a nearer side to this intake valve.

公开(公告)号：JPS63183231A

公开(公告)日：1988-07-28

申请号：JP1510187

申请日：1987-01-27

Applicant: TOYOTA MOTOR CORP

Inventor： HIROSE KATSUHIKO ,  NOGUCHI HIROSHI ,  TANAHASHI TOSHIO ,  UMEHANA TOYOICHI ,  ITO TOSHIO ,  HORII KINGO ,  EINAGA HIDEO

IPC: F02D41/02 ,  F02B25/20 ,  F02B27/06 ,  F02B31/00 ,  F02B75/02 ,  F02D41/00 ,  F02D41/04

Abstract: PURPOSE:To perform accurate air-fuel ratio control even in the case a fresh intake blow-through rate makes complicated changes by calculating a fresh intake capture factor from a multi-dimensional map corresponding to an operating condition of an internal combustion engine and adding a compensation to a basic fuel injection rate determined by load and rpm. CONSTITUTION:A 2-cycle internal combustion engine 1 or the like having a great blow-through rate of fresh intake is provided with a means 2 for supplying a required rate of fuel and a means 5 for calculating a fuel supply rate determined by the operating condition of the internal com. bustion engine 1. A means 4 is also provided for storing compensation data for compensating the blow- through of the fresh intake corresponding to multiple combinations of plural operating conditions of the internal combustion engine 1. A means 5 is further provided for calculating the compensation factor suitable for the measured operating conditions of the engine 1 and for correcting the fuel supply rate calculated with the means 3. A means 6 is further provided for forming a fuel supply signal of a corrected amount to be outputted to the means 2.

公开(公告)号：JPS6312818A

公开(公告)日：1988-01-20

申请号：JP15423086

申请日：1986-07-02

Applicant: TOYOTA MOTOR CORP

Inventor： TANAHASHI TOSHIO ,  NAKAMURA NORIHIKO ,  UJIHASHI MICHIAKI ,  NOGUCHI HIROSHI ,  ITO TOSHIO ,  UMEHANA TOYOICHI ,  HIROSE KATSUHIKO ,  HORII KINGO

IPC: F02B17/00 ,  F02B11/00 ,  F02B23/08 ,  F02B25/00 ,  F02B27/02 ,  F02B31/02 ,  F02B75/02 ,  F02B75/18 ,  F02M25/07

Abstract: PURPOSE:To stratify fresh air and exhaust gas, so as to improve the ignitionability, by setting an exhaust system adapted to control the pressure fluctuation of back pressure of an exhaust port, in light load range of an engine, and setting means which contain a mask, adapted to give a swirl to the exhaust gas blown back to a combustion chamber. CONSTITUTION:In light load range of an engine, an intake air control valve 16 is closed, and on the other hand, an exhaust gas control valve 34 is opened. Then, exhaust valves 31a, 31b are opened according to the descendent motion of a piston 3, to blow the exhaust gas toward exhaust ports 32a, 32b, respectively, and this exhaust gas is blown back to a combustion chamber 2. At this time, a swirl of exhaust gas is formed by the eccentric port 32b and a mask 5, and at the same time, the lower part of the swirl is guided to a slanting recessed part 8 of the top face of the piston 3. On the other hand, fresh air passed through a throttle valve 13 and a supercharger 14, is led slowly into the combustion chamber 2 through an intake valve 21a, and gathered near a sparking plug 4 on the cylinder head 6 side. In this way, the fresh air on the cylinder head 6 side and the exhaust gas on the piston 3 side, are stratified, and consequently, the ignitionability is improved.

公开(公告)号：JPS6312817A

公开(公告)日：1988-01-20

申请号：JP15422986

申请日：1986-07-02

Applicant: TOYOTA MOTOR CORP

Inventor： TANAHASHI TOSHIO ,  NAKAMURA NORIHIKO ,  UJIHASHI MICHIAKI ,  NOGUCHI HIROSHI ,  ITO TOSHIO ,  UMEHANA TOYOICHI ,  HIROSE KATSUHIKO ,  HORII KINGO

IPC: F02B17/00 ,  F02B11/00 ,  F02B23/08 ,  F02B25/00 ,  F02B27/02 ,  F02B31/02 ,  F02B75/02 ,  F02B75/18 ,  F02M25/07

Abstract: PURPOSE:To stratify fresh air and exhaust gas, so as to improve the ignitionability, by setting an exhaust system adapted to control the pressure fluctuation of back pressure of an exhaust port, in light load range of an engine, and setting means adapted to give a swirl to the exhaust gas blown back to a combustion chamber. CONSTITUTION:In light load range of an engine, an intake air control valve 16 is closed, and on the other hand, an exhaust gas control valve 34 is opened. Then, exhaust valves 31a, 31b are opened according to the descendent motion of a piston 3, to blow the exhaust gas toward exhaust ports 32a, 32b, respectively, and this exhaust gas is blown back to a combustion chamber 2. At this time, a swirl of exhaust gas is formed by the eccentric port 32b and a mask 5, and at the same time, the lower part of the swirl is guided to a slanting recessed part 8 of the top face of the piston 3. On the other hand, fresh air passed through a throttle valve 13 and a supercharger 14, is led slowly into the combustion chamber 2 through an intake valve 21a, and gathered near a sparking plug 4 on the cylinder head 6 side. In this way, the fresh air on the cylinder head 6 side and the exhaust gas on the piston 3 side, are stratified, and consequently,the ignitionability is improved.

公开(公告)号：JP2006342747A

公开(公告)日：2006-12-21

申请号：JP2005169955

申请日：2005-06-09

Applicant: TOYOTA MOTOR CORP

Inventor： ITO TOSHIO

IPC: F02M35/104 ,  F02M35/16

Abstract: PROBLEM TO BE SOLVED: To provide a shock absorbing structure of an internal combustion engine for a vehicle enabling miniaturization of the vehicle and appropriately absorbing collision energy at a time of collision of the vehicle. SOLUTION: This structure is mounted on a front part of the internal combustion engine main body arranged on a vehicle front part and is provided with an intake passage defining member 10 defining at least part of an intake passage IP and a shock absorbing member 20 forming at least an outer surface part of a front part of the intake passage member 10 and is made of porous material. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2000154722A

公开(公告)日：2000-06-06

申请号：JP32717998

申请日：1998-11-17

Applicant: TOYOTA MOTOR CORP

Inventor： ITO TOSHIO

IPC: F01P3/02

Abstract: PROBLEM TO BE SOLVED: To provide a structure of a cylinder head gasket capable of improving the cooling effect of a cylinder block, reducing the weight and cost of the cylinder block, and shortening the manufacturing time. SOLUTION: A water jacket separating part 30 provided at a cylinder head gasket 1 is provided to be recessed in the shape of a groove around cylinder bores 38 and a sealing member 34 is provided along the peripheral part of the water jacket separating part 30. When the cylinder head gasket 1 is placed on a cylinder block, the water jacket separating part 30 divides a water jacket of the cylinder block into two parts on the upper and lower sides and the sealing member 34 seals the parts between the bores of the cylinder block and the water jacket separating part 30. Further, the cylinder head gasket 1 has air vents and openings 36 for the passage of cooling water in the neighborhood of the areas between the bores 32.

公开(公告)号：JPH10252486A

公开(公告)日：1998-09-22

申请号：JP5300397

申请日：1997-03-07

Applicant: TOYOTA MOTOR CORP

Inventor： HABU NOBUO ,  ITO TOSHIO

IPC: F02B75/00 ,  F02B31/00 ,  F02B75/18 ,  F02M25/07

Abstract: PROBLEM TO BE SOLVED: To suppress occurrence of knocking by forming an EGR gas layer over the whole circumference of the peripheral part of a combustion chamber. SOLUTION: Communicating passages 18, 19, 20, 21 are arranged in this intake/exhaust device so that intake ports 6, 7, 8, 9 of air cylinders 2, 3, 4, 5 in an intake stroke and exhaust ports 13, 12, 11, 10 of air cylinders 5, 4, 3, 2 in an exhaust stroke are communicated with each other, thereby exhaust having high exhaust pressure of the air cylinder in the exhaust stroke is supplied as EGR gas to the air cylinder in the intake stroke. The negative pressure of the intake port is large at the time of a light load and blow down pressure is large at the time of a high load, therefore differential pressure between the intake port of a predetermined air cylinder and the exhaust port of the air cylinder corresponding to the predetermined air cylinder is always large. Therefore, EGR gas pressure can be sufficiently increased, and sufficiently strong intercylinder swirl can be produced in the combustion chamber of the air cylinder in the intake stroke.

公开(公告)号：JPH0763117A

公开(公告)日：1995-03-07

申请号：JP21049693

申请日：1993-08-25

Applicant: TOYOTA MOTOR CORP

Inventor： ITO TOSHIO

IPC: F02B19/16 ,  F02F1/00 ,  F02F1/24

Abstract: PURPOSE:To reduce longitudinal dimension of an engine with an auxiliary chamber of a combustion chamber disposed in between cylinders. CONSTITUTION:An auxiliary chambers 10 is disposed in between cylinders. To reduce the distance between cylinders, part of the auxiliary chamber 10 overlaps on an upper portion of a main combustion chamber 1 of an adjoining cylinder. In a lower portion of a portion of the auxiliary chamber 10, overlapping on the upper portion of the main combustion chamber 1 of the adjoining cylinder, a seal wall 30 is formed, connecting together the outer peripheral wall of the main combustion chamber and a cylinder head 3 integrally. The seal wall 30 thus covers up the portion of the auxiliary chamber 10, overlapping on the upper portion of the main combustion chamber 1 of the adjoining cylinder.

公开(公告)号：JPH06185403A

公开(公告)日：1994-07-05

申请号：JP34278292

申请日：1992-12-22

Applicant: TOYOTA MOTOR CORP

Inventor： ITO TOSHIO ,  NAKAE KOICHI

IPC: F01P3/02 ,  F02F1/36

Abstract: PURPOSE:To allow cooling of an exhaust valve sheet ring part sufficiently even if forming a plenty of bolt holes for fixation. CONSTITUTION:A main jacket 10 is provided between an intake port 4 and an exhaust port 6, an intake side sub jacket 12 is provided under the intake port 4, and an exhaust side sub jacket 14 which is narrower than the main jacket 10 is provided under the exhaust port 6. An exhaust side sub supply path 15 for introducing cooling water of a cylinder block is so formed as to open to the exhaust side sub jacket 14. A communicating path 16 which communicates the exhaust side sub jacket 14 with the main jacket 10 is formed in a bolt boss part 9A located adjacent to an exhaust valve sheet ring 7. Though the exhaust sub jacket 14 has a complicated and intricate shape, cooling water in the exhaust side sub jacket 14 flows smoothly to the main jacket 10 via the communicating path 16 without any stagnation near the exhaust valve sheet ring 7.