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公开(公告)号：JP2003148225A
公开(公告)日：2003-05-21
申请号：JP2001340915
申请日：2001-11-06
Applicant: TOYOTA MOTOR CORP
Inventor： HASHIMOTO YOSHINOBU , SASAKI SHIZUO , YOSHIZAKI KOJI , KOBAYASHI NOBUKI
IPC: F01L1/34 , B01D53/94 , F01L13/00 , F01N3/20 , F01N3/24 , F02D13/02 , F02D21/08 , F02D41/04 , F02D43/00 , F02M25/07
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for a diesel engine efficiently activating an exhaust catalyst, in a diesel engine with a function recirculating part of exhaust to an intake system. SOLUTION: An ECU 80 for totally controlling an operational state of an engine 1 prohibits exhaust circulation through an EGR passage 60, and performs control (alternative control of low temperature combustion) to obtain an effect of an inner EGR by driving a VVT mechanism to effectively increase a temperature of a NOx catalyst disposed to an exhaust system 40, when following conditions are satisfied: heat supply to the NOx catalyst is required to activate the NOx disposed to the exhaust system 40 or to keep the NOx in an active state; and the preferred operational state of the engine is optimized by mixing an inactive gas into combustion gas.
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公开(公告)号：JP2006226381A
公开(公告)日：2006-08-31
申请号：JP2005039805
申请日：2005-02-16
Applicant: TOYOTA MOTOR CORP
Inventor： MURATA HIROKI , MATSUMOTO ISAO , MURAKAMI GENICHI , NAGAE MASAHIRO , ONO TOMOYUKI , AOYAMA TARO , HASHIMOTO YOSHINOBU , YAMASHITA AKIRA , NISHIOKA HIROMASA
IPC: F16H61/02 , B60K6/48 , B60K6/547 , B60L11/14 , B60L50/16 , B60R16/08 , B60W10/06 , B60W10/26 , B60W10/30 , B60W20/00 , F01M1/02 , F01M1/18 , F01M7/00 , F02D17/00 , F02D29/02 , F16H57/04 , F16H59/14 , F16H59/18 , F16H59/44 , F16H61/68 , F16H61/682
Abstract: PROBLEM TO BE SOLVED: To drive an electric oil pump at a minimum opportunity before an engine or the like is regularly started and operated and surly supply oil to predetermined parts. SOLUTION: An electric oil pump drive control device comprises an oil-supplied device controlled for automatic stop and start and requiring oil supply, the electric oil pump for supplying oil, a demand output estimation means for estimating driver demand output Pe, and an electric pump drive means for driving and controlling the electric oil pump when estimated Pe exceeds electric oil pump drive demand output Pod which is smaller than engine start demand output Pegsta by a predetermined amount w. It is judged from engine rotation speed whether the engine is in stop (S10, S11), the respective outputs Pe, Pegsta are read in if the engine is in stop (S11 Yes, S12), the electric oil pump is driven when the Pe exceeds the Pod (= Pegsta - w) (S13 Yes, S14), and in other cases, stop of the drive is continued (S15). COPYRIGHT: (C)2006,JPO&NCIPI
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公开(公告)号：JP2006226168A
公开(公告)日：2006-08-31
申请号：JP2005039804
申请日：2005-02-16
Applicant: TOYOTA MOTOR CORP
Inventor： HASHIMOTO YOSHINOBU , MATSUMOTO ISAO , MURAKAMI GENICHI , NAGAE MASAHIRO , ONO TOMOYUKI , AOYAMA TARO , MURATA HIROKI , YAMASHITA AKIRA , NISHIOKA HIROMASA
Abstract: PROBLEM TO BE SOLVED: To efficiently perform the NOx reduction of a storage/reduction type NOx catalyst by a simple structure. SOLUTION: In this exhaust emission control device of a hybrid vehicle having the storage/reduction type NOx catalyst in an exhaust passage and allowed to drive by either one of an engine and a motor, when NOx is releasably reduced from the storage/reduction type NOx catalyst while an EV is running by the motor (YES in step S100, YES in step S110), a throttle valve is roughly fully closed to restrict intake air (step S120), and the engine is rotated at a low speed following the process of the restriction to inject a fuel from a cylinder injection fuel injection valve into a cylinder (step S130) without performing ignition. A rich mixture cracked in a compression stroke is fed to the storage/reduction type NOx catalyst to efficiently perform the NOx reduction at a low space velocity SV. COPYRIGHT: (C)2006,JPO&NCIPI
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