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公开(公告)号：JPH0886262A
公开(公告)日：1996-04-02
申请号：JP4529495
申请日：1995-03-06
Applicant: TOYOTA MOTOR CORP
Inventor： TAKEDA KEISO , KAWAI TAIYO , NAKANISHI KIYOSHI
Abstract: PURPOSE: To provide a two-hole injector which is constituted to atomize fuel spray. CONSTITUTION: In a fuel injection valve for an internal combustion engine comprising a single fuel injection nozzle 52; and two holes through which division fuels after fuel is injected through the fuel injection nozzle flow, a fuel collision surface 58 with which columnar and liquid fuel through the fuel injection nozzle is collided and which changes fuel into a liquid film state is arranged in a position corresponding to the fuel injection nozzle 52. Further, an air injection nozzle 65 to inject air toward the fuel after, collision is provided.
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公开(公告)号：JPH02308960A
公开(公告)日：1990-12-21
申请号：JP13032189
申请日：1989-05-24
Applicant: TOYOTA MOTOR CORP
Inventor： KAWAI TAIYO , NAKAGAWA NORIHISA , OHASHI MICHIHIRO , NAKAMURA NORIO
IPC: F02M25/07
Abstract: PURPOSE:To obtain the optimum EGR rate at low/medium-load areas and secure the output at the high-load area by calculating the EGR rate in response to the correction suction pipe pressure corrected in the present atmospheric pressure when the present suction pipe pressure is the preset value or above. CONSTITUTION:A control circuit 52 determines the EGR rate by an EGR valve 36 with the correction suction pipe pressure corrected in response to the atmospheric pressure detected by the suction pipe pressure only when the suction pipe pressure detected by a pressure sensor 13 is the preset pressure or above in the engine atmospheric pressure. At the pressure below the preset pressure on the other hand, i.e., in low/medium-load areas, the EGR rate is determined by the uncorrected suction pipe pressure (in the standard atmospheric pressure), and the optimum EGR quantity is determined. In this case, only the engine rotating speed detected by a rotation angle sensor 54 and the EGR rate based on the suction pipe pressure may be prepared. The optimum EGR rate in low/ medium-load areas is obtained, and the engine output in the high-load area, particularly near the fully opened area of a throttle valve, can be secured.
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公开(公告)号：JPH01159453A
公开(公告)日：1989-06-22
申请号：JP31803787
申请日：1987-12-15
Applicant: TOYOTA MOTOR CORP
Inventor： NAKAGAWA NORIHISA , KAWAI TAIYO , SANO SHINICHI
Abstract: PURPOSE:To make it instantaneously followable to a variation in a sudden driving state at the time of acceleration and thereby improve drivability by letting an EGR valve output an accelerating time control signal conformed to the detected result of an accelerating request as long as a specified period when there was the accelerating request of an engine. CONSTITUTION:A controller, bearing the above caption, is made up of installing an exhaust gas recirculating valve EB adjusting the effective area interposingly in the point midway in an exhaust gas recirculating route CI connecting an exhaust system EX and an inlet system IN of an internal combustion engine EG. Then, it controls this exhaust gas recirculating valve EB with a control signal CS made up by a control signal making means CM according to an engine driving state. In this case, there is provided with an accelerating request detecting means C1 which detects an accelerating request of the engine EG. When this accelerating request is detected, an accelerating time control signal As conformed to the said detected result in preference to the said control signal CS is made so as to be outputted to the exhaust gas recirculating valve EB from an accelerating time control means C2.
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公开(公告)号：JPS61268845A
公开(公告)日：1986-11-28
申请号：JP11011285
申请日：1985-05-24
Applicant: TOYOTA MOTOR CORP
Inventor： KAWAI TAIYO
Abstract: PURPOSE:To attain the end of low fuel consumption and low emission, by setting air-fuel ratio and an exhaust gas recirculation (EGR) rate so as to be in a predetermined value in accordance with a load region in plural sections, in the case of an engine which sets the air-fuel ratio and the EGR rate in accordance with an engine load and performs lean-state combustion in the partial load region. CONSTITUTION:An engine, providing intake ports three by three in one cylinder, respectively provides a fuel injection valve 34 in a central small contoured straight-type intake port 32 of the three intake ports and a swirl control valve 40 in the other straight-type intake port 30, and said control valve 40 is controlled by an actuator 44 in accordance with a working negative pressure introduced through a three way type solenoid valve 48. While an exhaust gas recirculation (EGR) valve 54, interposed in an EGR passage 52, is controlled by a working negative pressure introduced through a negative pressure control valve 58. Here the control method sets air-fuel ratio so as to obtain lean air-fuel ratio in low and intermediate load regions, almost theoretical air-fuel ratio in intermediate and high load regions and air-fuel ratio in a state richer than the theoretical air-fuel ratio in a high load region, while an EGR rate so as to provide a maximum value in a predetermined load region in the low and intermediate load regions and to be zero in the high load region.
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公开(公告)号：JPH04370338A
公开(公告)日：1992-12-22
申请号：JP14350691
申请日：1991-06-14
Applicant: TOYOTA MOTOR CORP , NIPPON DENSO CO
Inventor： KAWAI TAIYO , ONO KENICHI
Abstract: PURPOSE:To control an engine control parameter only when a torque fluctuation moderated value and a torque fluctuation decision value are placed in a predetermined level relation in an operational condition of suddenly changing a torque fluctuation, relating to a device which controls the engine control parameter so that intercycle fluctuation of generation torque in an internal combustion engine serves as target torque fluctuation. CONSTITUTION:When a torque fluctuation integrated value DTRQ10i is larger than a value of adding a fit constant 2.4N.m to a torque fluctuation value DTRQSM, torque fuctuation sudden increase is decided (steps 109, 110), and when DTRQ10i is smaller than DTRQSM-2.4N.m, torque fluctuation sudden decrease is decided (steps 113, 114). When relationship is DTRQSM>KDTRQ, rich correction is permitted (steps 117 to 121) only for the torque fluctuation sudden increase, and when the relationship is DTRQSM
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Patent Agency Ranking
公开(公告)号：JPS61215422A
公开(公告)日：1986-09-25
申请号：JP5612685
申请日：1985-03-22
Applicant: TOYOTA MOTOR CORP
Inventor： KAWAI TAIYO , NAKAGAWA NORIHISA , NOMURA HIROSHI , KASHIWANUMA NOBUAKI
IPC: F02B29/08 , F01L1/26 , F02B1/04 , F02B17/00 , F02B23/08 , F02B31/00 , F02B31/02 , F02B31/08 , F02D11/08 , F02D41/00 , F02D41/30 , F02D41/34 , F02D41/36 , F02D43/00 , F02F1/24 , F02F1/42 , F02M69/00
Abstract: PURPOSE:To improve both fuel consumption and power generation by providing a primary helical intake port, a secondary straight intake port and a third intake port including a fuel injection valve and devising the opening timing of the intake valve of each of these intake ports. CONSTITUTION:There are provided a primary intake port 1 which is helical port and enables generation of swirl in a combustion chamber 3, a secondary intake port 4 which is formed straight and includes an intake control valve 6 that is to be closed as the low-speed low-load time, and a third intake port 7 which is positioned between both the ports 1 and 4 and has a relatively small cross section. Said ports 1, 4, and 7 open to the combustion chamber 3 via intake valves 2, 6, and 8, respectively and a fuel injection valve 9 is disposed in the third intake port 7. The opening timing of the third intake valve 8 is set later than that of the primary intake valve 2.
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公开(公告)号：JPS6183459A
公开(公告)日：1986-04-28
申请号：JP20413384
申请日：1984-10-01
Applicant: Toyota Motor Corp
Inventor： KAWAI TAIYO , NAKAGAWA NORIHISA , NAGAI TOSHINARI , KASHIWANUMA NOBUAKI
Abstract: PURPOSE: To control a degree of stratified charge in optimum condition, by controlling the rate of an injection quantity out of both first and second fuel injection valves in time of closure of a suction control valve in a second suction port.
CONSTITUTION: A suction control valve 7 being set up in a second suction port 3 is closed at both low speed and low load ranges of an engine, and in time of this closure, the rate of each injection quantity out of a first fuel injection valve 31 in a first suction port 2 and a second fuel injection valve 32 in the second suction port 3 is controlled according to a running state of the engine. With this constitution, a rich mixture part B
2 and a lean mixture part B
1 both are formed in and around a spark plug 6 inside a combustion chamber, thus a degree of stratified charge is controllable in optimum conditions.
COPYRIGHT: (C)1986,JPO&JapioAbstract translation: 目的：通过在第二吸入口中的吸入控制阀关闭时控制第一和第二燃料喷射阀中的喷射量的速率来控制最佳状态下的分层充气度。 构成：在第二吸入口3中设置的吸入控制阀7在发动机的低速和低负载范围内均闭合，并且在该关闭的时间内，每个喷射量从第一燃料喷射阀 根据发动机的运行状态来控制第一吸入口2中的第一吸入口2和第二吸入口3中的第二燃料喷射阀32。 利用这种构造，在燃烧室内部的火花塞6内部和周围形成富混合物部分B2和贫混合物部分B1，因此在最佳条件下可以控制分层电荷的程度。
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公开(公告)号：JPH09317569A
公开(公告)日：1997-12-09
申请号：JP15178196
申请日：1996-05-22
Applicant: NIPPON SOKEN , TOYOTA MOTOR CORP
Inventor： TAKEYAMA MASAKI , YOSHINAGA TORU , TAKIGAWA MASAHIRO , KAWAI TAIYO , II AKIRA
IPC: F01M13/00 , F01M13/02 , F02M25/07 , F02M35/10 , F02M35/104
Abstract: PROBLEM TO BE SOLVED: To provide the device generating no oil film sticking to a throttle valve and being capable of uniformly distributing reflux gas in each cylinder. SOLUTION: A serge tank 2 downstream of a throttle body 1 having a throttle valve 3 thereon is made larger in its dia. than the throttle body 1, and in the tank 2 a cylindrical part 2c having the same dia. as a small dial throttle body 1 is extended from an end of the body 1. A gas flow path is formed between the cylindrical part 2c and the inner wall of a downstream large dia. intake pipe 2a positioned outside of the part 2c, and a gas reflux pipe 5 is connected thereto for ensuring reflux of gas in the tank 2 without being effected by swirls and the like. The pipe 5 is arranged in a plane perpendicular to the axis of the part 2c to allow the gas to flow out into the tank 2 after it is diffused in the path 22, leading to good mixing with intake air for improving the distribution in each cylinder.
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公开(公告)号：JPH08254138A
公开(公告)日：1996-10-01
申请号：JP5779195
申请日：1995-03-16
Applicant: TOYOTA MOTOR CORP , NIPPON DENSO CO
Inventor： ITO YOSHIYASU , KAWAI TAIYO , FUJIMURA TOSHIO , KIZAKI KANJI , INABA TAKAYOSHI , YAMAKITA HIROSHI
Abstract: PURPOSE: To severally prevent the occurrence of smoke and decrease in the number of cranking revolutions at the time of start by setting up timing for opening and closing an electromagnetic spill valve based on a specified pulse which is always outputted even if variation is caused in engine revolution. CONSTITUTION: A fuel injection pump 1 has a pulsar 7 attached to the base end side of a driving shaft 5. Notched teeth being the same in number as the number of cylinders of a Diesel engine are formed on the outer periphery of the pulsar 7, and a projection (tooth) are severally formed between each pair of notched teeth. In addition, the electomagntic spill valve 23 for adjusting the fuel spill from a high pressure chamber 15 is provided in the middle of a spill passage 22. On the other hand, an engine speed detection sensor 35 consisting of an electromagnetic pick up coil is attached opposite to the outer periphery of the pulsar 7. In the case where an engine state is at the time of extremely low rotations, the electromagnetic spill valve 23 is closed at the time when the first reference pulse is inputted, and the electromagnetic spill valve 23 is opened at the time when specified time elapses after the occurrence of the second referrence pulse.
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公开(公告)号：JPH04334739A
公开(公告)日：1992-11-20
申请号：JP10415791
申请日：1991-05-09
Applicant: TOYOTA MOTOR CORP
Inventor： TAKAOKA TOSHIBUMI , KAWAI TAIYO
Abstract: PURPOSE:To enable change of a fuel injection time according to the torque fluctuation amount of an internal combustion engine, in a device for controlling the fuel injection time of a multiple cylinder internal combustion engine for lean limit control. CONSTITUTION:A torque fluctuation value is detected (step 101 to 108), and it is judged whether the detected torque fluctuation value is in a prescribed value range or not, (step 110). When the torque fluctuation value is a lower limit value or less, a fuel injection completed time is advanced (step 111). When the torque fluctuation value is an upper limit value or more, the fuel injection completed time is delayed (step 112).
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