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121.发明专利
公开(公告)号：JP2003013738A
公开(公告)日：2003-01-15
申请号：JP2002130594
申请日：2002-05-02
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： UMEHANA TOYOICHI , KOBAYASHI TATSUO , HATTORI FUMIAKI , HAJIMA TAKASHI , HOKUTOU HIROYUKI , KASHIWAKURA TOSHIMI , KANDA MUTSUMI , TANAKA KOHACHI , MATSUSHITA SOICHI , ABE SHIZUO , MURAMATSU NOBUYUKI
CPC classification number: F02B23/104 , F02B2075/125 , F02F2001/245 , Y02T10/123 , Y02T10/125
Abstract: PROBLEM TO BE SOLVED: To provide a cylinder-injection-of-fuel-type spark ignition internal combustion engine capable of surely enlarging a stratiform combustion area to a high load side by securing the ignitionability.
SOLUTION: This cylinder-injection-of-fuel-type spark ignition internal combustion engine is provided with a fuel injection valve for injecting comparatively thin approximately fan-shaped fuel to make the fuel collide with a bottom wall of a cavity on a top of piston at an acute angle, the bottom wall of the cavity is provided with plural fuel guide passages adjacent to each other to guide plural collided fuel parts to a sidewall of the cavity under the consideration of radially dividing the injection fuel into plural fuel parts, the sidewall of the cavity is provided with a first fuel deflection passage and a second fuel deflection passage for deflecting two of plural fuel parts guided by plural fuel guide passages to pass through the neighborhood of an ignition plug, and a collision angle TH1 of the fuel in the first fuel guide passage 81a for guiding the fuel part to the first fuel deflection passage is smaller than a collision angle TH2 of the fuel in the second fuel guide passage 81b for guiding the fuel part to the second fuel deflection passage.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种能够通过确保点火性确保将层状燃烧区域扩大到高负荷侧的燃料喷射型燃料式火花点火内燃机。 解决方案：该气缸注射燃料型火花点火内燃机设置有燃料喷射阀，用于喷射相当薄的大致扇形燃料，以使燃料与活塞顶部的空腔的底壁碰撞 在锐角的情况下，空腔的底壁设置有多个燃料引导通道，彼此相邻以将多个相互关联的燃料部分引导到空腔的侧壁，考虑将喷射燃料径向分成多个燃料部分，侧壁 所述第一燃料偏转通道和第二燃料偏转通道用于偏转由多个燃料引导通道引导的多个燃料部分中的两个以通过火花塞附近，并且所述第二燃料偏转通道中的燃料的碰撞角度TH1 用于将燃料部分引导到第一燃料偏转通道的第一燃料引导通道81a小于第二燃料引导通道8中的燃料的碰撞角度TH2 1b用于将燃料部分引导到第二燃料偏转通道。
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公开(公告)号：JP2002188428A
公开(公告)日：2002-07-05
申请号：JP2000383818
申请日：2000-12-18
Applicant: TOYOTA MOTOR CORP , DENSO CORP
Inventor： TAWARA ATSUSHI , MATSUSHITA SOICHI , OKI HISASHI , HAYASHI KOTARO , ISHIYAMA SHINOBU , KOBAYASHI MASAAKI , SHIBATA DAISUKE , MAGATA HISAFUMI , ODA TOMIHISA , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , UMEHARA HIROSHI
Abstract: PROBLEM TO BE SOLVED: To provide a technology for detecting leakage of reducing agent in reducing agent feeding mechanism and prevent the reducing agent from wasting therewith, in the exhaust gas purifying device of an internal combustion engine equipped with the reducing agent feeding mechanism. SOLUTION: The exhaust gas purifying device of internal combustion engine provides an internal combustion engine of lean burn type 1, an exhaust gas purifying catalyst 20, reducing agent feeding mechanisms 28, 29, 30, 31, a means for detecting the reducing agent pressure 32 for detecting the reducing agent pressure of the region between a flow-regulation valve 30 in reducing agent feeding mechanisms 28, 29, 30, 31 and a shut-off valve 31 and a means for determining abnormality 35 for determining that the detected value of the means for detecting the reducing agent pressure is not greater than the pressure determined and that the reducing agent leaks from the reducing agent feeding mechanisms 28, 29, 30, 31, when the shut-off valve 31 is in the closed valve condition and the flow regulating valve 30 is in the closed valve condition.
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公开(公告)号：JP2002168119A
公开(公告)日：2002-06-14
申请号：JP2000367557
申请日：2000-12-01
Applicant: TOYOTA MOTOR CORP , DENSO CORP
Inventor： KOBAYASHI MASAAKI , MATSUSHITA SOICHI , OKI HISASHI , HAYASHI KOTARO , ISHIYAMA SHINOBU , SHIBATA DAISUKE , MAGATA HISAFUMI , ODA TOMIHISA , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI , UMEHARA HIROSHI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of detecting leakage of fuel added as a reducing agent. SOLUTION: This exhaust emission control device comprises a catalyst 20 for exhaust emission control provided in an exhaust system, a fuel adding apparatus 28 for adding fuel as a reducing agent to the catalyst 20 for exhaust emission control, a fuel supply source 6 for supplying fuel to the fuel adding apparatus 28, an emergency shutdown valve 31 formed by fitting the fuel supply source 6 on a fuel supply path 29 connected to the fuel adding apparatus 28, and a shutdown valve position detecting means for detecting that the emergency shutdown valve 31 is at a closed position. If fuel pressure on the upstream side acting on the emergency shutdown valve 31 is larger than that in the downstream, there is a possibility of fuel leakage, therefore the emergency shutdown valve 31 is controlled so as not to open even when an opening command is outputted. When an exhaust air-fuel ratio is not changed to the rich side even if a fuel adding command is outputted, added fuel leakage can be detected in the downstream of the emergency cutoff valve 31.
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公开(公告)号：JP2002161734A
公开(公告)日：2002-06-07
申请号：JP2001282004
申请日：2001-09-17
Applicant: TOYOTA MOTOR CORP
Inventor： ENDO GENSHIRO , MATSUSHITA SOICHI , MASUDA MICHIHIKO , AKIYAMA TADASHI
Abstract: PROBLEM TO BE SOLVED: To provide a device that is capable of steadily supplying a desired amount of reduction agent at desired timing without being influenced by the heat derived from the exhaust gas, in an exhaust gas cleaning device for an internal combustion engine designed to adjust the functions of a NOx catalyst by directly injection-feeding reduction agent to the exhaust system of the internal combustion engine. SOLUTION: A fuel injection nozzle 17, including its top end part 17c, is buried within the inner wall of an exhaust gas port 40a formed in a cylinder head 100a. An injection passage 101c guides the fuel injected from the top end part 17c of the fuel injection nozzle 17 into the inside of the exhaust gas port 40a. A wall 102 provided between the top end part 17c and the exhaust gas port 40a reduces the heat received from the nozzle 17. Also, the existence of a water jacket 110 adjacent to the outer periphery of a nozzle sheet 103 enables an efficient movement of the heat contained in the gasket 103 into the cooling water in the water jacket 110.
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公开(公告)号：JP2002155737A
公开(公告)日：2002-05-31
申请号：JP2000357416
申请日：2000-11-24
Applicant: TOYOTA MOTOR CORP
Inventor： ISHIYAMA SHINOBU , MATSUSHITA SOICHI , OKI HISASHI , HAYASHI KOTARO , KOBAYASHI MASAAKI , SHIBATA DAISUKE , MAGATA HISAFUMI , ODA TOMIHISA , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To improve the exhaust emission control technology for an internal combustion engine by establishing a technology for determining the deterioration condition of NOx catalyst. SOLUTION: The exhaust emission control device comprises the lean burn type internal combustion engine 1, NOx catalyst 20a, NOx purification control means 35 for releasing and reducing nitrogen oxides absorbed in the NOx catalyst 20a, a depoisoning control means 35 for executing depoisoning process to eliminate poisoning with the oxides of the NOx catalyst, a catalyst deterioration condition determining means 35 for determining the deterioration condition for the NOx catalyst as a result of the execution of the depoisoning process by the depoisoning control means 35, and a catalyst purification rate improving means 35 for improving the purification rate of the NOx purification process by activating the release or reduction of nitrogen oxides by changing the conditions for executing the NOx purification process of the depoisoning process based on the determination of the deterioration condition of the NOx catalyst.
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Patent Agency Ranking
公开(公告)号：JP2002129996A
公开(公告)日：2002-05-09
申请号：JP2000325624
申请日：2000-10-25
Applicant: TOYOTA MOTOR CORP
Inventor： SHIBATA DAISUKE , MATSUSHITA SOICHI , OKI HISASHI , HAYASHI KOTARO , ISHIYAMA SHINOBU , MAGATA HISAFUMI , KOBAYASHI MASAAKI , ODA TOMIHISA , HARADA YASUO , NEGAMI AKIHIKO , MATSUOKA HIROKI , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To prevent deterioration of the exhaust emission from an internal combustion engine. SOLUTION: This exhaust emission control device is provided with an operation condition-detecting means 36 for an internal combustion engine 1, an EGR gas temperature-measuring means 37, a means 35 for estimating the cooling efficiency of an EGR cooler 27 based on the operation condition and EGR gas temperature, a fuel injection amount-determining means 38 for determining the fuel amount to be supplied to the engine 1 including the air amount taken in the engine 1 and the EGR gas amount in a parameter, a means 14 for correcting the fresh air amount to be taken in the engine 1 based on the cooling efficiency of EGR cooler, and a means 26 for correcting the EGR gas amount of the engine 1 based on the above cooling efficiency.
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公开(公告)号：JP2002038932A
公开(公告)日：2002-02-06
申请号：JP2000223053
申请日：2000-07-24
Applicant: TOYOTA MOTOR CORP
Inventor： NEGAMI AKIHIKO , MATSUSHITA SOICHI , TSUKASAKI YUKIHIRO , MATSUOKA HIROKI , HAYASHI KOTARO , ISHIYAMA SHINOBU , OTSUBO YASUHIKO , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , ODA TOMIHISA , HARADA YASUO , ONO TOMOYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for internal combustion engine in which a NOX absorbent is arranged in the engine exhaust system, whereby poisoning of the NOX absorbent with oxides can certainly be eliminated while unnecessary deterioration of the NOX absorbent is precluded. SOLUTION: The exhaust emission control device of internal combustion engine is equipped with a NOX absorbent arranged in the engine exhaust passage, storing nitrogen oxides when the oxygen concentration of the inflowing exhaust gas is high and emitting the nitrogen oxides when the oxygen concentration has lowered, and a poisoning eliminating means to execute poisoning eliminating process for NOX absorbent when necessity has arisen for eliminating poisoning of the NOX absorbent with oxides while the engine is in the decelerative operation and in idling condition.
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公开(公告)号：JP2001280125A
公开(公告)日：2001-10-10
申请号：JP2000097635
申请日：2000-03-31
Applicant: TOYOTA MOTOR CORP
Inventor： TSUKASAKI YUKIHIRO , MATSUSHITA SOICHI , HAYASHI KOTARO , ISHIYAMA SHINOBU , OBA TAKAHIRO , TAWARA ATSUSHI , SHIBATA DAISUKE , NEGAMI AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To prevent a reducing agent added to an exhaust port for cleaning NOx from reaching to an intake system through an EGR device. SOLUTION: A NOx catalyst 17 is mounted on the way of an exhaust pipe. An intake manifold 2 and an exhaust manifold 14 are connected by an EGR pipe 23 for allowing a part of the exhaust to be recirculated to an intake system. A fuel addition nozzle 19 for adding the fuel into an exhaust gas is mounted oppositely to an exhaust port 13 of a fourth cylinder to clean NOx by the NOx catalyst 17, and its fuel injecting direction is directed to a connecting part with an exhaust cooling pipe 16 in the exhaust manifold 14. A connecting part with the EGR pipe 23 is located near a first cylinder in the exhaust manifold.
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公开(公告)号：JP2000291438A
公开(公告)日：2000-10-17
申请号：JP9668999
申请日：1999-04-02
Applicant: TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
Inventor： KOBAYASHI TATSUO , MATSUSHITA SOICHI , KASHIWAKURA TOSHIMI , ABE SHIZUO , HATTORI FUMIAKI , FUJIKAWA TAKETOSHI , NOMURA YOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To generate intended engine output by burning all injected fuel as combustible air-fuel mixture, even if fuel diverts its flow to the ignition plug side sidewall direction of a cavity and the fuel injection valve side sidewall direction after the fuel collides with the wall surface of the cavity in stratified charge combustion. SOLUTION: In a cylinder injection type spark ignition internal combustion engine, a cavity 8 formed on the top surface of a piston is provided with a bottom wall 8a, an ignition plug side sidewall 8b and a fuel injection valve side sidewall 8c. Fuel is injected from a fuel injection valve 7 towards the bottom wall of the cavity in stratified charge combustion, and the injected fuel is advanced along the bottom wall to the ignition plug side sidewall, deflected by the ignition plug side sidewall, and guided to a vicinity of an ignition plug 6. A turn-up part 8e is provided on the fuel injection valve sidewall, in order to guide fuel 10b to the vicinity of the ignition plug, when a part 10b of injected fuel 10 is advanced toward the fuel injection valve side sidewall along the bottom wall.
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公开(公告)号：JPH0921369A
公开(公告)日：1997-01-21
申请号：JP17077195
申请日：1995-07-06
Applicant: TOYOTA MOTOR CORP
Inventor： MASUSHIRO ZENICHIROU , MATSUSHITA SOICHI
Abstract: PROBLEM TO BE SOLVED: To stabilize the combustion of an engine in an engine low load condition and a low injection amount condition. SOLUTION: This is a fuel injection control device for an internal combustion engine furnishing a fuel injection valve 1 to inject the fuel pressurized by a fuel feeding pump 2, and when the load from the external side input to an engine is decided to be low depending on the accelerator opening PA and the rotation frequency NE, a control device 6 reduces the pressurizing force of the fuel feeding pump 2 to reduce the fuel pressure, and as a result, the opening speed of the fuel injection valve 1 is increased so as to stabilize the injection amount injected for a short injecting period.
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