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公开(公告)号：JP2002339754A
公开(公告)日：2002-11-27
申请号：JP2002130591
申请日：2002-05-02
Applicant: TOYOTA MOTOR CORP
Inventor： UMEHANA TOYOICHI , KOBAYASHI TATSUO , HATTORI FUMIAKI , HAJIMA TAKASHI , HOKUTOU HIROYUKI , KASHIWAKURA TOSHIMI , KANDA MUTSUMI , TANAKA KOHACHI , MATSUSHITA SOICHI , ABE SHIZUO , MURAMATSU NOBUYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a cylinder injection type spark ignition internal combustion engine capable of surely expanding a stratified combustion area to a high load side by assuring a reliable ignitability. SOLUTION: This cylinder injection type spark ignition internal combustion engine comprises an ignition plug, a cavity 802 formed in the top face of a piston, and a fuel injection nozzle 7 injecting fuel into the cavity in generally rather thin fan shape. The cavity comprises side walls deflected so that fuel can generally pass near the ignition plug. A plurality of deflection guiding projected parts 22 deflecting fuel in lateral direction are provided in the cavity.
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公开(公告)号：JP2002081311A
公开(公告)日：2002-03-22
申请号：JP2000269233
申请日：2000-09-05
Applicant: TOYOTA MOTOR CORP
Inventor： OTSUBO YASUHIKO , MATSUSHITA SOICHI , TSUKASAKI YUKIHIRO , MATSUOKA HIROKI , HAYASHI KOTARO , ISHIYAMA SHINOBU , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , NEGAMI AKIHIKO , ODA TOMIHISA , HARADA YASUO , ONO TOMOYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine allowing reconciling of purification efficiency of reduction purification of NOx contained in exhaust of the internal combustion engine and oxidation purification of an unburned material in a high level. SOLUTION: An exhaust system of the internal combustion engine 1 comprises branch passages 51 for branching exhaust discharged from the engine 1, a storage reduction type NOx catalyst 52 provided for every branch passage 51, a confluent passage 53 for joining exhaust flowing in each branch passage 51 and an oxidation catalyst 54 which is provided in the confluent passage 53 and promotes oxidation purification of the unburned material in exhaust. An electronic control unit 30 independently controls each fuel adding operation by a reducing agent addition nozzle provided in each branch passage 51 and differentiates an air-fuel ratio of exhaust flowing into the NOx catalyst 52 for every branch passage.
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公开(公告)号：JP2002038941A
公开(公告)日：2002-02-06
申请号：JP2000223050
申请日：2000-07-24
Applicant: TOYOTA MOTOR CORP
Inventor： HARADA YASUO , MATSUSHITA SOICHI , TSUKASAKI YUKIHIRO , MATSUOKA HIROKI , HAYASHI KOTARO , ISHIYAMA SHINOBU , OTSUBO YASUHIKO , MAGATA HISAFUMI , KOBAYASHI MASAAKI , SHIBATA DAISUKE , NEGAMI AKIHIKO , ODA TOMIHISA , ONO TOMOYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine for adjusting adding pressure of a reducing agent according to an operating condition and executing optimum addition of the reducing agent without shifting the depth of rich spike to a lean side. SOLUTION: This device is characterized by comprising a NOX catalyst 17a provided in an exhaust passage connected with an exhaust downstream side of a multicylinder internal combustion engine 1 capable of performing lean combustion, a reducing agent adding means 19 provided in the exhaust passage on the upstream side of the NOX catalyst 17a to add the reducing agent, and a pressure correction means for correcting adding pressure of the reducing agent according to the operating state of a vehicle, and by controlling the addition of the reducing agent at the adding pressure corrected by the pressure correction means.
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公开(公告)号：JP2002030927A
公开(公告)日：2002-01-31
申请号：JP2000216450
申请日：2000-07-17
Applicant: TOYOTA MOTOR CORP
Inventor： OTSUBO YASUHIKO , MAGATA HISAFUMI , MATSUSHITA SOICHI , TSUKASAKI YUKIHIRO , MATSUOKA HIROKI , HAYASHI KOTARO , ISHIYAMA SHINOBU , KOBAYASHI MASAAKI , SHIBATA DAISUKE , NEGAMI AKIHIKO , ODA TOMIHISA , HARADA YASUO , ONO TOMOYUKI
Abstract: PROBLEM TO BE SOLVED: To effectively carry out NOx reduction purification and the process of recovery from SOx poisoning by using a means for promoting evaporation of a reducing agent for use in NOx reduction purification using a NOx absorber, when the reducing agent and fuel for the process of recovery from SOx positioning adhere to exhaust ports, or for preventing their adhesion. SOLUTION: The exhaust emission control device includes an occlusion reduction type NOx catalyst 17 provided in an exhaust pipe 16 for absorbing NOx in exhaust gas flowing in the exhaust pipe 16; a fuel adding nozzle 19 for adding fuel to the NOx catalyst 17; an ECU 9 serving as a fuel addition determining means for determining whether or not the addition of the fuel by the nozzle 19 is required; and an evaporation promoting means for promoting the evaporation of the added fuel. Upon the necessity of fuel addition being recognized by the ECU 9 serving as the fuel addition determining means, the nozzle 19 is actuated to effect the addition of fuel to the NOx catalyst 17 as evaporation of the added fuel is promoted by the ECU 9 serving also as the fuel evaporation promoting means.
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公开(公告)号：JP2001234799A
公开(公告)日：2001-08-31
申请号：JP2000054396
申请日：2000-02-25
Applicant: TOYOTA MOTOR CORP
Inventor： HAYASHI KOTARO , MATSUSHITA SOICHI , TAWARA ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To prevent generation of bore flashing due to additional fuel injection. SOLUTION: A cylinder fuel injection valve 111 of each of cylinders is controlled by an electronic control unit(ECU) 30 of a diesel engine 1. An exhaust air-fuel ratio is made less than a stocchiometric air-fuel ratio by carrying out additional fuel injection to an expansion stroke or to an exhaust stroke in addition to main fuel injection from the cylinder fuel injection valve when releasing NOx absorbed from a NOx occluding reducing catalyst 70 arranged in an exhaust passage 3 by the ECU. Additional fuel injection is carried out once for every one cylinder stroke cycle in each of cylinders, the number of cycles to carry out additional fuel injection continuously with the one cylinder is limited to the number not to cause bore flashing, and a term of period to stop additional fuel injection for a period of time to sufficiently recover lubricating oil film thickness of a wall surface in the cylinder until following additional fuel injection is started after the additional fuel injection is continuously carried out is provided.
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Patent Agency Ranking
公开(公告)号：JPH08164840A
公开(公告)日：1996-06-25
申请号：JP31042094
申请日：1994-12-14
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUSHITA SOICHI , TAKADA MITSURU , YOSHIOKA YUKIO
Abstract: PURPOSE: To provide a negative pressure controller of an internal combustion engine capable of supplying sufficient negative pressure to a brake booster without increasing a load on the internal combustion engine even in the internal combustion engine run stationarily under the suction pipe pressure approximate to the atmospheric pressure. CONSTITUTION: A brake booster 17 is connected to a surge tank 14 by a connecting piping 18. A control section 19 not only determines the opening of a throttle valve 15 corresponding to the running condition, but also closes the throttle valve, generate negative pressure in the surge tank and maintain the function of the brake booster when a pressure sensor detects that pressure for operating the brake booster approaches the atmospheric pressure. Further, in an internal combustion engine carrying out fuel injection for stratified combustion during low load running, the fuel injection is altered to one for uniform combustion in closing the throttle value.
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公开(公告)号：JPH0835429A
公开(公告)日：1996-02-06
申请号：JP17557794
申请日：1994-07-27
Applicant: TOYOTA MOTOR CORP
Inventor： GONO TAKESHI , MATSUSHITA SOICHI
Abstract: PURPOSE:To enable stable stratified charge combustion within the wide operating range by forming a mixture stratum of the combustible air-fuel ratio near a spark plug, and igniting it. CONSTITUTION:A recessed combustion chamber 5 is formed on the upper surface of a piston 1. The shape of the combustion chamber is so formed that a circular are-like first wall surface section 5a, a linear second wall surface section 5b, and a circular arc-like third wall surface section 5c may be continuously arranged from the upstream in relation to an intake swirl flow S, and a spark plug 4 is arranged in the position near the compression top dead center and near the second wall surface section. A fuel injection valve 2 injects misty fuel to the first wall surface section side of the combustion chamber.
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公开(公告)号：JPH07286293A
公开(公告)日：1995-10-31
申请号：JP10447494
申请日：1994-04-19
Applicant: TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
Inventor： KAWAHARA KAZUO , SAEKI TORU , ABE KATSUJI , OSHIMA YUJIRO , MATSUSHITA SOICHI
Abstract: PURPOSE:To provide a gas generator capable of preventing the failure due to the freezing of water (or soln.) and with the water as the raw material. CONSTITUTION:This gas generator 1 is provided with a means 41 for measuring the water temp. in an electrolytic cell 11 and a control means 40. The pressures of the generated gases 81 and 82 are utilized either in a means for discharging the water 80 in the cell 11 or in a means for resupplying water. Otherwise, the negative pressure on the suction side of an engine is utilized either in the water discharge means or in the water resupply means. Further, freezing is detected from the resistance value of the cell 11, and heat is supplied to the cell 11 or the cell 11 is stopped.
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公开(公告)号：JPH06173670A
公开(公告)日：1994-06-21
申请号：JP32940492
申请日：1992-12-09
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUURA KOZO , MATSUSHITA SOICHI , GONO TAKESHI
Abstract: PURPOSE:To make the excellent prewarming of a catalyzer possible even when idle engine speed control is carried out according to engine temperature in a catalyzer warming device for a combustible burning type internal combustion engine where an internal combustion engine being possible in lean-burning is used to eliminate an air supply device. CONSTITUTION:A catalyzer warming device for an internal combustion engine has a combustible supply means 6 to supply combustibles near an ignition plug 5 when catalyzer temperature is below fixed value and an ignition control means to control the ignition plug 5 so that the combustibles may be ignited when they are supplied near the ignition plug, and is equipped with an air-fuel ratio control means to control the air-fuel ratio in an engine combustion chamber so as to be a fixed air-fuel ratio being leaner than a theoretical air-fuel ratio when the combustibles are supplied near the ignition plug 5 and a combustible supply quantity control means 7 to control the combustible supply means so as to increase the supply quantity per unit time of the combustible in direct proportin to engine speed.
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公开(公告)号：JPH06117240A
公开(公告)日：1994-04-26
申请号：JP26228392
申请日：1992-09-30
Applicant: TOYOTA MOTOR CORP
Inventor： MATSUSHITA SOICHI , GONO TAKESHI , MATSUURA KOZO
Abstract: PURPOSE:To maintain an excellent ignition performance of an ignition plug mounted on the exhaust system and execute the secure early warming-up of a catalyst converter in a catalyst warming-up equipment of an internal combustion engine to realize the early warming-up of the catalyst converter mounted on the exhaust system. CONSTITUTION:A catalyst warming-up equipment is provided with a catalyst converter 4 mounted on an exhaust system 2 of an internal combustion engine, an igniting means 5 mounted in the upstream of the catalyst converter 4 of the exhaust system 2, a combustible supplying means 6 to supply the combustible to the vicinity of the igniting means 5, a first control means 11 to actuate the respective means 5, 6 when the catalyst temperature of the catalyst converter 4 is below the specified value, and a second control means 11 to actuate the respective means 5, 6 when the non-actuating time of the respective means 5, 6 while the internal combustion engine is running is below the specified value.
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