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公开(公告)号：JPH06147219A
公开(公告)日：1994-05-27
申请号：JP29439292
申请日：1992-11-02
Applicant: TOYOTA MOTOR CORP
Inventor： YAMAZAKI SUEHIRO , KIDO YOSHIO
Abstract: PURPOSE:To obtain a connecting rod bearing capable of maintaining sufficient flow of lubrication oil and making its pressure surface small. CONSTITUTION:An oil feeding port 14 is provided at the bottom of a bearing 11 to guide lubrication oil fed through a lubrication oil channel provided in the interior of a connecting rod to the internal surface of the bearing 11 and, in addition, lubrication oil feeding grooves 15 and 16 are provided in the internal surface of the bearing 11 in the circumferential direction and in the bearing width direction. These lubrication oil grooves 15 and 16 are formed narrow at the bearing surface and wide at the bottom of the bearing. Thus it is possible to increase the lubrication oil flow flowing through the lubrication oil channel as well as to maintain the surface pressure of the bearing below the preset specified value.
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公开(公告)号：JPH02215923A
公开(公告)日：1990-08-28
申请号：JP3372889
申请日：1989-02-15
Applicant: TOYOTA MOTOR CORP
Inventor： MASUBUCHI MASAHIKO , NOGUCHI HIROSHI , UMEHANA TOYOICHI , TATE TAKAO , KIDO YOSHIO , NIHEI HIROAKI
Abstract: PURPOSE:To prevent large output torque from occurring at time of resuming a fuel supply by setting up a charging cutoff valve being fully opened when the fuel supply is stopped, in a charging passage. CONSTITUTION:Each charging cutoff valve 50 is set up in each charging branch pipe 10. The charging cutoff valve 50 is controlled into three positions as in a full-open position, a partial open position and a full-close position by each selecting action of solenoid selector valve 59, 60 being controlled by an electronic control unit 70. When a deceleration operating time fuel supply is stopped hereat, each charging cutoff valve 50 is fully closed but fully opened when the fuel supply should be resumed. With this constitution, when the valve 50 is fully closed, an inflow of fresh air into a combustion chamber 4 is checked, so that the inside of this combustion chamber 4 comes to be filled up with a large quantity of residual burnt gas. Therefore large output torque is in no case generated when the fuel supply is reopened, thus any shock will not occur at all.
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公开(公告)号：JPH02196149A
公开(公告)日：1990-08-02
申请号：JP1505289
申请日：1989-01-26
Applicant: TOYOTA MOTOR CORP
Inventor： NIHEI HIROAKI , NOGUCHI HIROSHI , UMEHANA TOYOICHI , TATE TAKAO , KIDO YOSHIO , MASUBUCHI MASAHIKO
Abstract: PURPOSE:To prevent a sudden increase of output torque and any impact attending on this each from occurring by reopening a fuel supply after once stopping it at time of decelerating drive, while after reopening of the fuel supply, feeding only partial cylinders with fuel as long as the specified period. CONSTITUTION:In this multicylinder 2-cycle internal combustion engine, a feed valve 11, an exhaust valve 13 and an air blast valve 15 are adjacently installed in its combustion chamber 10. In this case, the air blast valve 15 is controlled as follows, namely, first of all, after a fuel supply is stopped at time of decelerating drive, it is controlled by a fuel supply-cut resetting means A so as to reopen the fuel supply in succession. After reopening of the fuel supply, fuel is fed to only partial cylinders as long as the preset period, and successively it is controlled by a fuel supply control means B so as to feed all cylinders with fuel after the elapse of the specified period. With this constitution, a sudden increase of output torque and any impact attending on this each are prevented from occurring.
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公开(公告)号：JPH02169864A
公开(公告)日：1990-06-29
申请号：JP32038688
申请日：1988-12-21
Applicant: TOYOTA MOTOR CORP
Inventor： UMEHANA TOYOICHI , NOGUCHI HIROSHI , TATE TAKAO , KIDO YOSHIO , NIHEI HIROAKI , MASUBUCHI MASAHIKO
Abstract: PURPOSE:To prevent the damage of an air blast valve by installing a pressure sensor in the passage of compressed air, and letting it judge that an air blast valve is abnormal when a compressed air pressure exceeds a predetermined pressure. CONSTITUTION:An air blast valve 9 injects fuel into a combustion chamber 4 together with compressed air. A pressure sensor 24 is installed in a compressed air distribution chamber 20, which generates output electricity proportional to compressed air pressure. The pressure sensor 24 is connected to an electronic control unit 60 through an abnormal pressure detecting circuit 50. When a compressed air pressure exceeds a predetermined pressure, the air blast valve 9 judges that it is abnormal. The air blast valve can be prevented from being damaged this way.
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公开(公告)号：JPS62240473A
公开(公告)日：1987-10-21
申请号：JP8120686
申请日：1986-04-10
Applicant: TOYOTA MOTOR CORP , NIPPON SOKEN
Inventor： KOBAYASHI TATSUO , KIDO YOSHIO , ONO EIJI , YORITA HIROSHI , TANAKA TAKESHI
IPC: F02P3/12
Abstract: PURPOSE:To enable a high potential to jump up quickly in an ignition device using a piezo element by applying the offset to said piezo element using a GTO thyristor after the resonance phenomenon of the piezo element becomes stable. CONSTITUTION:Based on the respective outputs of a revolutional angle sensor 5, a suction pressure sensor 6, and a water temperature sensor 7, an ECU1 possesses various arithmetic operations to generate predetermined control signal. Using said control signal, the power transistors 21 and 22 inside an ignitor driving circuit 2 has the primary current of a transformer 24 switched to generate alternate voltage at the secondary side of a transformer 4. By applying this alternate voltage to the piezo element 31 of the ignitor 3, a high voltage is generated at the opposed ends of said ignitor to drive an ignition plug 4. Inside the ignitor 3, a GTO thyristor 32 is disposed between the output terminal of the piezo element and the earth. Said thyristor 32 is opened under control after the specified period passed from the point when the alternate voltage is applied to the piezo element 31.
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Patent Agency Ranking
公开(公告)号：JPS62101841A
公开(公告)日：1987-05-12
申请号：JP24052285
申请日：1985-10-29
Applicant: TOYOTA MOTOR CORP
Inventor： KANAMARU MASANOBU , KOBAYASHI TATSUO , KIDO YOSHIO , ONO EIJI
Abstract: PURPOSE:To detect knocking efficiently by extending connecting members in a radiated form from a knocking sensor installation section located within the angle, upon which a plurality of cylinders arranged in a V-type form looks out, and also by connecting the connecting members with the cylinder block at their extended ends. CONSTITUTION:An engine block 1 is formed integrally together with a plurality of cylinder blocks 6 and 8 and the upper half of a crank case 4. And a plurality of cylinders 6a-6c, and 8a-8c is formed in series in each of the cylinder blocks 6 and 8 where these cylinders are arranged in a V like form. In this situation, the engine block 1 is formed with connecting members 30-40 in a radiated form where the members are connected at their one ends to that section of the block upper decks 26 and 28 which is corresponds to each cylinder, on the upper section of each of cylinder blocks 6 and 8, and the members are also connected at the other ends of them to the installation section 18 which is held between the cylinder blocks. And a knocking sensor 2 is installed on the top surface of the installation section 18.
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公开(公告)号：JPS62101840A
公开(公告)日：1987-05-12
申请号：JP24052085
申请日：1985-10-29
Applicant: TOYOTA MOTOR CORP
Inventor： KANAMARU MASANOBU , KOBAYASHI TATSUO , KIDO YOSHIO , ONO EIJI
Abstract: PURPOSE:To detect the vibration of knocking which occurs in a combustion chamber, efficiently by providing a vibration transmitter of small damping characteristics between a cylinder block and a cylinder head so as to install a knocking sensor on the vibration transmitter. CONSTITUTION:A vibration transmitter 4 which is made of iron and the like of small internal damping characteristics for the vibration of knocking, is installed on the upper section of a cylinder block 3 through a gasket 8a. And a cylinder borehole which is same in diameter as the cylinder block 3, is formed in the inside of the vibration transmitter 4 so as to insert a piston 15 slidably into these cylinder boreholes. In addition, a cylinder head 2 is provided on the upper end of the vibration transmitter 4 through a gasket 8b, to form a combustion chamber 16. And a knocking sensor 10 is installed on the outer wall of the vibration transmitter 4. In this constitution, when knocking occurs in the combustion chamber, the vibration of it can be transmitted to the knocking sensor 10 without being damped excessively within the vibration transmitter 4.
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公开(公告)号：JPH02188668A
公开(公告)日：1990-07-24
申请号：JP766689
申请日：1989-01-18
Applicant: TOYOTA MOTOR CORP
Inventor： TATE TAKAO , NOGUCHI HIROSHI , UMEHANA TOYOICHI , KIDO YOSHIO , NIHEI HIROAKI , MASUBUCHI MASAHIKO
IPC: F02M67/02
Abstract: PURPOSE:To improve the fuel atomizing performance at the time of resuming fuel feeding in the present device which alternately injects compressed air and fuel out of a nozzle port placed in a combustion chamber by prohibiting the injection of the compressed air after feeding fuel into a compressed air passage at the time of cutting off fuel. CONSTITUTION:In an air blast valve 20 in which a nozzle port 24 which is placed in a combustion chamber 4 is formed on the end of a needle inserting port 22, the opening/closing of the nozzle port 24 is carried out by the valve portion 25 on the end portion of a needle 23, which is moved when a solenoid 30 is excited to open the nozzle port 24. A nozzle chamber 32 is formed in the housing 21 of the air blast valve 20 and a compressed air flow-in passage 33 is connected to one end thereof while opening the injecting port 37 of a fuel injection valve 36 in the nozzle chamber 32. In such a fuel injection device, at the time of cutting off fuel, fuel injection is carried out for only once to hold fuel in a compressed air flow-out passage 35 and the needle inserting port 22, thereby keeping same in standby for the resumption of fuel feeding.
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公开(公告)号：JPS62214326A
公开(公告)日：1987-09-21
申请号：JP6114486
申请日：1986-03-17
Applicant: TOYOTA MOTOR CORP
Inventor： KANAMARU MASANOBU , ONO EIJI , KOBAYASHI TATSUO , KIDO YOSHIO
Abstract: PURPOSE:To increase the S/N of a knock signal and to improve the detection accuracy by calculating the difference between two vibration signals detected at two positions on an internal combustion engine wherein specific frequency components of knock vibrations generated in cylinders are opposite in phase. CONSTITUTION:Knock sensors 14 and 15 which detect vibrations of knocks generated in a combustion chamber 6 are arranged at two positions of a cylinder block. The fitting positions of the knock sensors 14 and 15 are above the cylinder block 2 where there is a 180 deg. phase difference generated in vibration mode. The output signals KN1 and KN2 of the knock sensors 14 and 15 are inputted to a differential amplifier 20 through BPFs 16 and 17. The differential amplifier 20 sends an output signal SAD which indicates the difference between the output signals BF1 and BF2 of the BPFs 16 and 17 to a knock control computers (KCC) 30 as its output signal DE through a peak holding circuit 24 and an A/D converter 25. The KCC 30 inputs this output signal DE and the rotational angle signal NE of a rotational angle sensor 13 and outputs the knock discrimination signal of the arithmetic result of a CPU 31 through an output port 35.
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公开(公告)号：JPH02204674A
公开(公告)日：1990-08-14
申请号：JP2091489
申请日：1989-02-01
Applicant: TOYOTA MOTOR CORP
Inventor： KIDO YOSHIO , NOGUCHI HIROSHI , UMEHANA TOYOICHI , TATE TAKAO , NIHEI HIROAKI , MASUBUCHI MASAHIKO
Abstract: PURPOSE:To keep off any carbon accumulation onto a nozzle port by stopping a supply of fuel a fuel supply system while opening an on-off valve doing on-off control over the nozzle port several times when the fuel supply into a combustion chamber should be done. CONSTITUTION:When a fuel supply into a combustion chamber of an engine is stopped due to decelerating drive or the like, any fuel injection action out of a fuel injection valve 41 of an air blast valve 9 is stopped. Simultaneously, while a fuel-cut flag is being set, an on-off valve 33, namely, the air blast valve 9 is repeatedly opened, and air out of a compressed air supply port 40 is repeatedly sprayed out of a nozzle port 32 via compressed air passages 39, 31, whereby carbon being accumulated in this nozzle port 32 is blown off by this compressed air. Thus, the carbon can be prevented from being accumulated on the nozzle port of the air blast valve.
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