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1. 发明专利

JPH0754644A ELECTRIC HEATING-TYPE CATALYST DEVICE 失效
公开(公告)号：JPH0754644A
公开(公告)日：1995-02-28
申请号：JP32283193
申请日：1993-12-21
申请人： TOYOTA MOTOR CORP , NIPPON SOKEN , NIPPON STEEL CORP
发明人： FUJISHIRO OSAMU , YOSHINAGA TORU , WATANABE MASAHIKO , SHINOHARA YUKIHIRO , KAWABE YASUYUKI , ICHIKAWA HIROAKI , YOSHIZAKI KOJI , NAGAMI TETSUO , ITO TOSHIHIKO , HIRAYAMA HIROSHI , ITO TAKAAKI , SANADA MASAKATSU , IZAWA AKIHIRO
IPC分类号： B01D53/86 , B01J35/02 , B01J35/04 , F01N3/20 , B01D53/87
摘要： PURPOSE:To contrive decrease in energy consumption by partially heating a catalyst support through a process of providing a partial heating part connected to the catalyst support so as to be partially electrified. CONSTITUTION:A metallic support 15 wherein a short-circuit passage 22 in the radial direction is formed is attached in the position of a first catalyst device 11 of a catalyst device 10, and only the metallic support 15 is connected to the power supply such as a battery. The short-circuit passage 22 is formed on the end surface on the upstream side, and electric resistance of the short-circuit passage 22 is smaller than that of a band-like body for constituting a honeycomb-like column 20, so large current flows to the short-circuit passage 22. Accordingly, the short-circuit passage 22 becomes a live to build a fire even in the relative narrow range, and action of the catalyst is started near there, and the reactive heat heats the other catalyst material, so as to raise the temperature successively, thereby the catalyst is activated. Thereby, warming of the whole of the catalyst device 10 is achieved in a short period by electric power smaller than the conventional one. Accordingly, the whole of the catalyst device 10 quickly and normally purifies exhaust gas after an engine is started, the discharging time of not purified exhaust gas is shortened, and the amount of contaminant is decreased.

2. 发明专利

JPH07158483A FUEL INJECTION CONTROL METHOD FOR DIESEL ENGINE 失效
公开(公告)号：JPH07158483A
公开(公告)日：1995-06-20
申请号：JP34064593
申请日：1993-12-08
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TAKIGAWA MASAHIRO , ITO TOSHIHIKO , YOSHINAGA TORU , SUZUKI FUMITADA , HISATOMI SHIGETAKA , YAMADA MITSUMASA
IPC分类号： F02M25/07 , F02B3/06 , F02D21/08 , F02D41/02 , F02D41/10 , F02D41/38
摘要： PURPOSE:To improve accelerating property and prevent generation of smoke by comparing a referential injection amount with the maximum injection amount, and setting the smaller amount thereof as a final injection amount, and increasing the maximum injection amount according to the difference between pre-ratio and post-ration when the referential injection amount exceeds the maximum injection amount. CONSTITUTION:An engine exhaust pipe P2 is connected to an engine intake pipe P1 through an EGR passing point P3 which is provided with an EGR valve 2. The EGR valve 2 is driving- controlled by an electric control device 1 through a negative pressure control valve 3. In the electronic control device 1, an injection nozzle 6 is driving-controlled through a fuel injection pump 5 on the basis of a signal which is detected from an intake air amount sensor 4 and the like. At the time, a referential injection amount which is calculated from accelerating degree and engine rotating speed is compared with a maximum injection amount which is calculated from new air intake air amount and engine rotating speed, the smaller injection amount is served as a final injection amount. When the referential injection amount exceed the maximum injection amount, the maximum injection amount is increased according to the difference between the ratio just when the referential injection amount exceeds the maximum injection amount, and the ratio before the referential injection amount exceeds the maximum injection amount.

3. 发明专利

JPH0771230A EXHAUST EMISSION CONTROL DEVICE 失效
公开(公告)号：JPH0771230A
公开(公告)日：1995-03-14
申请号：JP8478194
申请日：1994-04-22
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： MORISHIMA SHINGO , YAMADA JUN , KANEHARA KENJI , ITO TOSHIHIKO , TAKADA TOSHIHIRO , HIRAYAMA HIROSHI
IPC分类号： B01D53/94 , F01N3/08 , F01N3/24 , F01N13/02 , F01N13/04 , F02D41/00 , F02D41/02 , F02D41/14 , F02D43/00 , F02M25/07
摘要： PURPOSE:To reduce the discharge of hydrocarbon (HC) at the starting time without causing the output lowering of an internal combustion engine and dispense with an electric heater or the like for the early activation of a catalyst. CONSTITUTION:A bent part (an adsorption box 12) is formed at the intermediate part of an exhaust pipe 4 connecting an exhaust port 14 to a catalyst for purifying HC and the like in exhaust gas, and HC adsorbent 15 of honey comb structure is disposed frontward in the unbent rectilinear direction in the bent part. The exhaust gas flowing out of the exhaust port 4 is bent to flow into the exhaust pipe 4, but HC with large grain diameter moves rectilinearly along a stream lining blade 13 so as to be adsorbed by the HC adsorbent 15 and held for a while. In the meantime, the temperature of the catalyst connected to the exhaust pipe 4 rises to activate and purify HC and the like desorbed by the temperature rise of the adsorbent 15. A separate HC catalyst can be carried by the front face part, liable to become high in temperature, of the adsorbent 15, or an EGR(exhaust gas recirculation) passage provided with an EGR control valve can be connected to the lower reaches of the absorbent 15.

4. 发明专利

JPH05296149A 失效
公开(公告)号：JPH05296149A
公开(公告)日：1993-11-09
申请号：JP9667292
申请日：1992-04-16
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： OTSUKA YOSHI , ITO TOSHIHIKO , YORITA HIROSHI , WATANABE KAZUHIDE , ONO EIJI , ITO KAZUHIRO , SHIBATA AKIRA
IPC分类号： F04B43/02 , F04B45/04
摘要： PURPOSE:To provide a diaphragm type pump improved in durability to the fatigue of a diaphragm by relaxing local stress applied to the diaphragm. CONSTITUTION:A diaphragm holding base 12 is fixedly disposed in a housing 11, and a diaphragm formed of flexible material is held between the housing 11 and the base 12. A pump chamber 15 is formed by a spherical receiving concave face 14 and the diaphragm 13, and a pressure chamber 18 is formed by a spherical receiving concave face 17 and the diaphragm 13. A cylinder 19 is formed at the lower part of the diaphragm holding base 12, and a piston 20 reciprocated by the rotary motion of a cam 27 is fittingly inserted into the cylinder 19. A diaphragm type pump 2 discharges or sucks fuel according to the displacement of the diaphragm 13, and the diaphragm 13 is displaced in such a way as to come in contact with the receiving concave faces 14, 17.

5. 发明专利

JPH04171208A HYDRAULIC-ACTUATION VALVE UNIT 失效
公开(公告)号：JPH04171208A
公开(公告)日：1992-06-18
申请号：JP29826890
申请日：1990-11-02
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： KOSUDA TORU , OSHIMA KENJI , ITO TOSHIHIKO , SHINDO KENICHIRO
IPC分类号： F01L9/02
摘要： PURPOSE:To eliminate control error resulting from the variation of parts for optimum valve operation by providing a correction control means to reflect the deviation between the intended open/close operation of a valve and the actual open/close operation of the valve to the next open/close control of the valve. CONSTITUTION:Oil pressure in a plunger room 25 is detected by a pressure sensor 30. A computer 42 finds the actual open/close operation of an inlet valve 34 (the opening timing, the amount of lift and the closing timing of the inlet valve 34) based on oil pressure in the plunger room 25 associated with the open/close operation of the inlet valve 34 and detected by the pressure sensor 30, to modify the coefficient of correction so that the deviation between the intended open/close operation of the inlet valve 34 and the actual open/close operation of the inlet valve 34 can be reflected to the next open/close control of the inlet valve 34. As a result, the real operation of the inlet valve 34 can be detected, and the operation in an optimum condition is always allowed by the computer 42 which controls the operation timing and period of a pressure oil supply valve 8 and a pressure oil discharge valve 60.

6. 发明专利

JPS63120807A LUBRICATING OIL HEATING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63120807A
公开(公告)日：1988-05-25
申请号：JP26657186
申请日：1986-11-11
申请人： TOYOTA MOTOR CORP , NIPPON SOKEN
发明人： KAWAI NOBUAKI , SATO AKIRA , ITO TOSHIHIKO , TANAKA TAKESHI , WAKAYAMA MASAO
IPC分类号： F01M5/00 , F01M7/00
摘要： PURPOSE:To reduce a driving force and ensure a necessary amount of lubricating oil, by providing oil heaters on the side of inlets of an oil pump and a main oil hole, and carrying out on/off control of both the oil heaters according to specific operating conditions of an engine. CONSTITUTION:In a lubricating oil line for an internal combustion engine, a first oil heater 11 is provided on the upstream side of an oil pump, and a second oil heater 12 is provided on the downstream side of the oil pump and on the inlet side thereof. Both the oil heaters 11 and 12 are connected to an on/off control device 13. The on/off control device 13 comprises a CPU 18 for generating operation signals to relays 16 and 17 in receipt of the output signals from a temperature sensor 14 of the engine or the like and an engine key 15. With this arrangement, the first oil heater 11 is turned off upon cranking, and is turned on upon preheating at a vary low temperature. The second oil heater 12 is turned on at a very low temperature, and is turned off at a normal low temperature.

7. 发明专利

JPS62248812A OIL CIRCULATION DEVICE 失效
公开(公告)号：JPS62248812A
公开(公告)日：1987-10-29
申请号：JP9291786
申请日：1986-04-22
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： WAKAYAMA MASAO , TANAKA TAKESHI , ITO TOSHIHIKO , SATO AKIRA
IPC分类号： F01M1/16 , F01M5/02
摘要： PURPOSE:To prevent the startability of an oil pump from becoming worse due to a load by relieving the discharge side of the oil pump when the oil temperature is less than a fixed value and the engine is in a starting engine speed, or when the engine is in an idling engine speed and the oil pressure is more than a fixed value. CONSTITUTION:An oil pump 1 sucks in oil from an oil pan 9, and supplies oil through a circulation passage 7 to the lubricating part 6 of an engine. Near the discharge opening of the oil pump 1, a return passage 8 branches off from the circulation passage 7, and on the return passage 8 is provided a spool-type electro-magnetic relief valve 2. An electro-magnetic coil 208 for driving the electro-magnetic relief valve 2 is controlled by a microcomputer 3, and according to detection values from an oil temperature sensor 31, engine speed sensor 32 and an oil pressure sensor 33, when the oil pressure is not less than 5 kg/cm , and the engine is in an idling speed, and moreover, the oil pressure is not less than 1 kg/cm , or the oil temperature is approximately -15 deg.C, and the engine speed is less than 800 rpm, the valve 2 is caused to open.

8. 发明专利

JPS62170736A FUEL INJECTION RATIO CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPS62170736A
公开(公告)日：1987-07-27
申请号：JP1217986
申请日：1986-01-24
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： ITO TOSHIHIKO , YOSHINAGA TORU , NATSUYAMA YUKIHIRO , OMICHI SHIGEKI , KOBAYASHI FUMIAKI
IPC分类号： F02D1/02 , F02B3/06 , F02M41/12 , F02M51/00
摘要： PURPOSE:To accurately perform a fuel injection ratio control, by providing a fuel injection ratio control device which is intercommunicated to a high pressure chamber capable of being pressurized by means of the plunger of a fuel injection pump, and provided with a free-piston inserted into the cylinder thereof, thereby electrically controlling the displacement of the free-piston. CONSTITUTION:An injection ratio control mechanism 40 is provided on the front face of a housing 10 of a distributor type fuel injection pump. Said mechanism 40 is constituted in such a way that a solenoid valve 45, variable displacement mechanism 46 and partion plate 47 are housed in a casing 41, wherein the solenoid valve 45 is provided with a valve body 51 which is upward moved against a spring 50 so as to be separated from a valve seat 56 by excitation of a solenoid 48. Further, a free-piston 52 energized by a spring 53 in a cylinder 65 is housed in the variable displacement mechanism 46. Then, the first hydraulic pressure chamber 67 partioned by the piston 52 is intercommunicated to a low pressure chamber 16 through a solenoid valve 45 and the second hydraulic pressure chamber 68 is intercommunicated to a high pressure chamber 13 partioned between a plunger 12 and partion plate 47 through a continuity passage 66.

9. 发明专利

JPS62111110A OIL HEATING DEVICE 失效
公开(公告)号：JPS62111110A
公开(公告)日：1987-05-22
申请号：JP25067785
申请日：1985-11-11
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： YORITA HIROSHI , ITO TOSHIHIKO , TANAKA TAKESHI , SATO AKIRA
IPC分类号： F01M5/00
摘要： PURPOSE:To reduce oil viscosity at low temperature and lessen a pump load by providing a heater on a bypass valve laid in parallel with a suction pipe running from an oil pan to an oil pump, and feeding an electric current to said heater during the time of turning on a key switch to start finish. CONSTITUTION:In parallel with an oil suction pipe 7 running from an oil pan 11 to an oil pump 8, there is a bypass pipe 6 provided. And within the bypass pipe 6 are provided a heater 5 at the side of an oil pan 11, and an oil temperature detecting thermister 4 at the side of an oil pump 8, respectively. An electric current supply to the heater 5 is controlled by a control circuit 3 and concurrently with a switching-on signal from a key switch 2, the current supply starts. When a starter 9 is supplied with an electric current and this current supply is stopped after the running thereof, a current supply to the heater 5 is stopped.

10. 发明专利

JPS61279717A SUPPLY DEVICE FOR LUBRICATING OIL IN INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS61279717A
公开(公告)日：1986-12-10
申请号：JP12142485
申请日：1985-06-06
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TANAKA TAKESHI , ITO TOSHIHIKO , ARAI KATSUMI , YORITA HIROSHI , KAWAI NOBUAKI
IPC分类号： F01M1/16
摘要： PURPOSE:To improve startability of an engine, by providing a relief valve, through which a pressure oil supply circuit and a relief circuit communicate when the engine is in cranking operation, and decreasing a load applied to the engine due to a pressure rise of oil in the pressure oil supply circuit. CONSTITUTION:The captioned device has a circulating pressure oil supply circuit, which contains an oil pan 1, oil pump 2, oil filter 4, oil cooler 6, oil cooler relief valve 7 and an engine lubrication part 8, while a relief circuit 9 which interposes a relief valve 3 branching from a pressure oil supply passage 18 between the oil pump 2 and the oil filter 4 and communicating with the oil pan 1. Here the device provides the second relief circuit 20 branching parallelly with said relief circuit 9 from the pressure oil supply passage 18. And the device interposes in said circuit 20 a relief valve 21 equipped with a valve unit 30 having two valve plates 31, 32 so as to be opened when an engine is in cranking operation and when the pump generates a delivery pressure of predetermined value or more.

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