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111. 发明专利

JP2004257339A VAPORIZED FUEL TREATING DEVICE FOR VARIABLE CYLINDER ENGINE 审中-公开
公开(公告)号：JP2004257339A
公开(公告)日：2004-09-16
申请号：JP2003050550
申请日：2003-02-27
申请人： TOYOTA MOTOR CORP
发明人： OKAZAKI SHUNTARO , NAGAI TOSHINARI , OI YASUHIRO , OTSUKA IKU , KOBAYASHI DAISUKE , KATO NAOTO
IPC分类号： F02M25/08 , F02D13/06 , F02D17/02
摘要： PROBLEM TO BE SOLVED: To provide a vaporized fuel processing device for a variable cylinder engine capable of positively executing purge when needed in the variable cylinder engine, and capable of preventing emission of vaporized fuel into the atmosphere. SOLUTION: The device is equipped with: a vapor amount estimation means adsorbed by a canister for estimating the amount of vapor adsorbed by the canister 63 of a vaporized fuel treating means; and an operation control means for operating either one of full-cylinder operation or reduced-cylinder operation, which ever has the greater maximum purging amount, when the amount of vapor adsorbed by the canister is more than a predetermined value and the purging amount to an intake system is more than a predetermined value. COPYRIGHT: (C)2004,JPO&NCIPI

112. 发明专利

JP2002257200A DRIVE BELT AND MANUFACTURING METHOD FOR THE BELT 失效
公开(公告)号：JP2002257200A
公开(公告)日：2002-09-11
申请号：JP2001055499
申请日：2001-02-28
申请人： TOYOTA MOTOR CORP
发明人： KOBAYASHI DAISUKE , AZUMA HITOSHI , KOJIMA KAZUHITO , NISHIGAYA MASAFUMI , HAMASHIMA TETSUO , ITO SATOSHI , BABA SHINICHI , YUASA MEGUMI
IPC分类号： F16G5/16
摘要： PROBLEM TO BE SOLVED: To enhance the durability of a drive belt without loss of accuracy of relative positioning of blocks. SOLUTION: The relation of a rocking-edge distance difference δin the blocks that constitute the drive belt and a clearance Cy in the Y direction between a dimple and a hole is set to a predetermined relation. Even if the blocks are inclined by a moment generated in accordance with the rocking-edge distance difference δ, the interference of the dimple and the hole is avoided or, even if the dimple and the hole are interfered to each other, large stress is not developed particularly, and then the durability of the drive belt is enhanced. When the rocking-edge distance difference δ is small, the clearance Cy can be reduced, thus enhancing the accuracy of relative positioning of the blocks.

113. 发明专利

JP2002147279A INTAKE AIR QUANTITY COMPUTING DEVICE AND INTAKE AIR PRESSURE COMPUTING DEVICE 失效
公开(公告)号：JP2002147279A
公开(公告)日：2002-05-22
申请号：JP2000340626
申请日：2000-11-08
申请人： TOYOTA MOTOR CORP
发明人： KOBAYASHI DAISUKE , MUTO HARUFUMI
IPC分类号： F02M25/08 , F02D41/00 , F02D41/18 , F02D45/00 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To provide an intake air quantity computing device capable of enhancing accuracy in computing an intake air quantity, and to provide an intake air pressure computing device capable of enhancing accuracy in computing an intake air pipe pressure. SOLUTION: An intake air pipe pressure P0 is computed from the sum of an air quantity QA0 passing through a throttle which is computed based on at least a throttle opening and a purge flow QP flowing in an intake air pipe from a purge passage, and an intake air pipe pressure P3 is computed from an intake air quantity QA based on the output of an air flow meter. An intake air quantity sucked into an engine is computed based on those intake air pipe pressure P0 and intake air pipe pressure P3.

114. 发明专利

JP2003120404A CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003120404A
公开(公告)日：2003-04-23
申请号：JP2001322381
申请日：2001-10-19
申请人： TOYOTA MOTOR CORP
发明人： KOBAYASHI DAISUKE
IPC分类号： F02D9/02 , F02D11/10 , F02D41/04 , F02D41/14 , F02D43/00 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To accurately presume a throttle valve opening at a timing around a time when an intake valve is closed without impairing a response from an internal combustion engine. SOLUTION: This electric control apparatus 70 determines a provisional target throttle-valve opening according to an accelerating control input Accp detected by an accelerator opening sensor 81. The provisional target throttle- valve opening is delayed by a predetermined delay time TD and considered as a target throttle-valve opening in order to drive a throttle valve 43. Thus, a future throttle-valve opening may be presumed and a throttle valve opening at the timing around the time when the intake valve is closed is also presumed. The delay time TD is assumed to be time T270 necessary for rotating a clunk by a predetermined angle (270 deg. CA, for example). As a result, the delay time TD is reduced at a high-velocity rotation so that the response from the internal combustion engine is maintained in condition, and the delay time TD is sufficiently long at a low-velocity rotation, thus improving a presumed accuracy of the throttle valve opening at the timing around the time when the intake valve is closed.

115. 发明专利

JP2002097994A INTAKE AIR QUANTITY DETECTOR OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002097994A
公开(公告)日：2002-04-05
申请号：JP2000288786
申请日：2000-09-22
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： MUTO HARUFUMI , KOBAYASHI DAISUKE , FURUKAWA SATORU
IPC分类号： F02D45/00 , F02D35/00 , F02D41/18 , G01F1/684 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To provide a intake air quantity detector of an internal combustion engine capable of precisely compensating the delay in the response of a thermal air flow sensor. SOLUTION: The intake air quantity detector is for detecting the quantity of intake air in the internal combustion engine 1 by using the thermal air flow sensor 13. The intake air quantity detector has a response delay compensating means 18 for compensating the delay in the response of the air flow sensor 13 by using a primary delay element related to the quantity of heat radiated in the air flow sensor 13. The response delay compensating means 18 divides the air flow sensor 13 into plural portions and compensates the delay in the response of the air flow sensor 13 on the whole by considering the primary delay related to the quantity of radiated heat in each divided portion and integrating them.

116. 发明专利

JP2002130041A SUCTION AIR VOLUME ESTIMATION DEVICE AND SUCTION PRESSURE ESTIMATION DEVICE 失效
公开(公告)号：JP2002130041A
公开(公告)日：2002-05-09
申请号：JP2000318078
申请日：2000-10-18
申请人： TOYOTA MOTOR CORP
发明人： KOBAYASHI DAISUKE , MUTO HARUFUMI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a suction air volume estimation device improving the estimation precision of a suction air volume and to provide a suction air pressure estimation device improving the estimation precision of a suction pipe pressure. SOLUTION: This suction air volume estimation device repeatedly estimates the suction air volume sucked into an internal combustion engine at prescribed periods. This estimation device calculates a suction pipe air mass corresponding to the suction air volume in a previous estimation and a suction pipe air mass M(tp1) corresponding to the suction air volume in this estimation based on a difference between the previous estimation in closing the suction valve and this estimation in closing the suction valve (S14) and the suction air volume m(tp1) in this estimation time is calculated based on the calculated suction pipe air mass M(tp1) (S18).

117. 发明专利

JP2002130039A FLOW RATE CALCULATING DEVICE 失效
公开(公告)号：JP2002130039A
公开(公告)日：2002-05-09
申请号：JP2000326108
申请日：2000-10-25
申请人： TOYOTA MOTOR CORP , DENSO CORP
发明人： KOBAYASHI DAISUKE , OHATA AKIRA , MUTO HARUFUMI , DODA HISAYO
IPC分类号： F02D45/00 , F02D11/10 , F02D41/18 , G01F1/36 , G01F9/00
摘要： PROBLEM TO BE SOLVED: To provide a flow rate calculating device capable of precisely calculating the flow rate of fluid passing through a ventilation path. SOLUTION: This flow rate calculating device calculates the air flow rate passing through a throttle valve 23 provided on the way to an intake pipe 20. On the assumption that the flow rate of fluid passing the throttle valve 23 is set to mt, the opening area of the throttle valve 23 is set to Ad, an upstream pressure in the upstream side of the throttle valve 23 is set to Pu, an upstream density in the upstream side of the throttle valve 23 is set to ρu, a downstream pressure in the downstream side of the throttle valve is set to Pd, and a specific heat ratio of the passing air is set to k, the air flow rate mt is calculated from the following expression. mt= Ad.(Pu.ρu)1/2.((((k-1)/(2.k)).(1-Pd/Pu)+Pd/Pu).(1-Pd/Pu))1/2.

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