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1. 发明专利

JPH10160025A SOLENOID FUEL INJECTION VALVE AND ITS MANUFACTURE 失效
公开(公告)号：JPH10160025A
公开(公告)日：1998-06-16
申请号：JP32179496
申请日：1996-12-02
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： GUNJI KENICHI , KANAMARU NAONOBU , YOKOYAMA MIZUHO , ISHIKAWA TORU , TERANISHI TAKAO
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To improve sealed properties even when supply fuel pressure is high such as an inter-cylinder direct fuel injection method, by respectively connecting the upper and lower ends of a cylindrical ring to a core and a yoke in a condition that the remaining compressed stress is maintained which is larger than the remaining stress generated when connecting. SOLUTION: A core 1 is inserted in a yoke 2, and the core 1 and the yoke 2 are mutually connected in the upper end part of the yoke 2. A coil bobbin 13 is inserted in a space between the core 1 and the yoke 2. A coil 10 is retained in this space. Also, a ring 9 is fixed between the core 1 and the yoke 2, and the material of the ring 9 is a SUS material harder in comparison with the core 1 and the yoke 2. The upper end part of the ring 9 and the lower end part of the ring 9 are respectively bitten into the lower end surface of the core 1 and the inside lower part of the yoke 2. The core 1 and the yoke 2 are connected to each other after the core 1 is previously pressurized, therefore the remaining compressed stress is generated in the upper and lower end parts of the ring 9, and sealed properties can be improved.

2. 发明专利

JPH029938A EVAPORATION FUEL CONTROL DEVICE 失效
公开(公告)号：JPH029938A
公开(公告)日：1990-01-12
申请号：JP15895688
申请日：1988-06-27
申请人： HITACHI LTD
发明人： TAKIMOTO KEIICHI , TERANISHI TAKAO , OKAMOTO HIROYUKI
IPC分类号： F02M25/08
摘要： PURPOSE:To activate an adsorbent and improve the adsorption performance by connecting a conduit means guiding the hot air around an exhaust pipe to the air inlet of a canister in a control device having the canister absorbing the adsorbed evaporation fuel into an engine. CONSTITUTION:An adsorbent 2 is filled in the canister main body 1 of a canister 3, the top section of the canister main body 1 is connected to a fuel tank 5 via a fuel pipe 4 and to an intake tube 8 via an intake pipe 6 respectively. An air inlet 11 is provided at the bottom section of the canister main body 1. In this case, a guide pipe 13 with a gas escape hole 12 is connected around the air inlet 11, a flexible hot air purge hose 15 with one end 15A opened on the periphery of an exhaust pipe 14 is connected to the guide pipe 13. When the evaporation fuel adsorbed to the canister 3 is absorbed to an engine 7, the hot air around the exhaust pipe 14 is guided into the canister 3 to activate the adsorbent 2, and the working capacity of the canister 3 is improved.

3. 发明专利

JPS6218748B2 失效
公开(公告)号：JPS6218748B2
公开(公告)日：1987-04-24
申请号：JP2667680
申请日：1980-03-05
申请人： HITACHI LTD
发明人： AMANO MATSUO , TERANISHI TAKAO , MORI YASUNORI , ABE OSAMU , SASAYAMA TAKAO
IPC分类号： F02D41/34 , F02D23/02 , F02D28/00 , F02D41/06 , F02M37/08 , F02N11/08 , F02N99/00

4. 发明专利

JPS6035551B2 失效
公开(公告)号：JPS6035551B2
公开(公告)日：1985-08-15
申请号：JP9041678
申请日：1978-07-26
申请人： HITACHI LTD
发明人： KASHIWATANI MINEO , TERANISHI TAKAO , AOCHI YOSHIKAZU
IPC分类号： F02D3/00 , F02M35/10 , F02M37/20 , F02M67/10 , F02M69/00 , F02M69/08

5. 发明专利

JPS56116966A ELECTROMAGNETIC AIR CONTROLLING VALVE 失效
公开(公告)号：JPS56116966A
公开(公告)日：1981-09-14
申请号：JP1783280
申请日：1980-02-18
申请人： HITACHI LTD
发明人： AOCHI YOSHIKAZU , MUNEOKA KAZUO , OOTANI TADAHIKO , TERANISHI TAKAO , KAMIFUJI HIROSHI
IPC分类号： F16K11/048 , F16K11/04 , F16K31/06
摘要： PURPOSE:To make air flow characteristics linear ones to improve controllability by aligning the direction of resultant force acting on two measuring valves forming valve bodies with the direction of electromagnetic force of a solenoid by pressure difference between a plurality of vent chambers. CONSTITUTION:Vent chambers 13, 15 communicate to an exhaust pipe 16 connected to an intake manifold, and a vent chamber 14 communicates to an intake pipe 12 connected to an air cleaner. Since the vent chambers 13, 15 are connected to the intake manifold side, they are subjected to high negative pressure so that forces act respectively on a measuring valve 6 leftward and on a measuring valve 7 rightward. Force of negative pressure acts on a vlave body 2 generally leftward according to the difference between the sectional areas of seat portions of measuring valves 6, 7. When a coil 3 is energized, electromagnetic force act leftward on the valves 6, 7 so that the valves 6, 7 begin to open. In the beginning of opening the valves force caused by negative pressure acts in the direction of opening the valves so that the valves smoothly open to improve the air flow characteristics into satisfactory linear ones.

6. 发明专利

JPS55104560A FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS55104560A
公开(公告)日：1980-08-11
申请号：JP1044179
申请日：1979-02-02
申请人： HITACHI LTD
发明人： AOCHI YOSHIKAZU , OOTANI TADAHIKO , TERANISHI TAKAO , KASHIWATANI MINEO
IPC分类号： F02M29/00 , F02M31/04 , F02M31/10 , F02M35/10 , F02M69/00
摘要： PURPOSE:To mix ejection fuel and air evenly and improve distribution performance by providing a mixing chamber, between the position where fuel supply valve opens to the suction path and the position where many suction branch pipes gather together, whose cross section area is larger than the sum of the cross section areas of these pipe paths. CONSTITUTION:At the time of the operation of engine 1, signals, Tw, etc., showing the amount of air flowing in air passage 9, or the condition of the engine are taken into control unit 11, and the signal corresponding to the amount of fuel to be supplied to engine 1 is given to ejection valve 10. Fuel is ejected from ejection valve 10 corresponding to the drive signal from unit 11. In this case, in the condition where the amount of suction air is small with respect to the degrees of opening of throttle valves 6a, 6b, the speed of air flow is small and the atomization of fuel is unstaisfactory. For this reason, mixing chamber 2, whose passage capacity is locally enlarged, is provided on the lower stream side of throttle chamber 5 in suction multi-branch pipe 3. By this, the speed of suction air flow is rapidly decreased and fuel drops are atmomized, and thereby fuel and air are mixed evenly.

7. 发明专利

JPS5587851A MIXED GAS SUPPLIER 失效
公开(公告)号：JPS5587851A
公开(公告)日：1980-07-03
申请号：JP15858978
申请日：1978-12-25
申请人： HITACHI LTD
发明人： KASHIWATANI MINEO , OOTANI TADAHIKO , AOCHI YOSHIKAZU , TERANISHI TAKAO
IPC分类号： F02M29/04 , F02M29/00 , F02M31/135 , F02M69/00
摘要： PURPOSE:To obtain uniform mixed gas by providing a guide to change the flow direction of mixed gas on the downflow side of fuel injection valve of the primary side air supply cylinder. CONSTITUTION:The lower end of the primary side air supply cylinder 6 is provided with the cylindrical piep 15 through which a mixed gas of the gas passing through aperture around the primary side throttle valve 12 and fuel injected is directed to the bottom of the mixing chamber 2 because the pipe 15 has an opening at the central part of the mixing chamber 2. The fine particles of fuel injected in a slant direction in the pipe 15 are vaporized during transportation by the inlet air current but comparatively coarser particles of the fuel wet the wall surface of the pipe 15 and then vaporized by the inlet air current. The fuel vaporized in this way and inlet air are uniformly mixed, flowed out of the pipe 15, and then dispersed when colliding with the bottom of the mixing chamber 2.

8. 发明专利

JPS54120322A FUEL FEEDING APPARATUS OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS54120322A
公开(公告)日：1979-09-18
申请号：JP2725978
申请日：1978-03-10
申请人： HITACHI LTD
发明人： AOCHI YOSHIKAZU , OOTANI TADAHIKO , TERANISHI TAKAO , TAKAMARU TAKESHI
IPC分类号： F02D41/34 , F02D3/00 , F02D3/02 , F02D9/02 , F02D41/18
摘要： PURPOSE:To improve the formation of fuel minute particles and consumption ratio and to obtain the apparatus having a superior correspondence to the variation of intake amount and permitting precise measurement of intake amount by arranging a control apparatus for the output of electrical signals relating to the shift amount of a movable piston arranged in an intake passage. CONSTITUTION:A movable piston 5 is inserted into an intake cylinder 3, and with said movable piston 5 and a fixed wall 19, a variable venturi part 6 is formed to vary the draft sectional area. The movable piston 5 slides in a suction chamber 7, and the negative pressure generated by the air flow in the variable venturi part 6 is introduced into the suction chamber 7 through a draft hole 9. A control apparatus 28 allows a fuel jet valve 20 to be operated with the output which permits the gushing of proper fuel amount by means of signals.

9. 发明专利

JPS5393227A CARBURRETOR 失效
公开(公告)号：JPS5393227A
公开(公告)日：1978-08-16
申请号：JP780677
申请日：1977-01-28
申请人： HITACHI LTD
发明人： NAGANAMI KENICHI , HONMA KIYOMI , AOCHI YOSHIKAZU , TERANISHI TAKAO
IPC分类号： F02M7/04 , F02M19/08
摘要： PURPOSE:To obtain a device which will not generate the abnormal fuel poorness even even in the engine high load and low speed by additionally setting up an auxiliary fuel system which is controlled by the pressure change between a venturi tube and a throttle valve.

10. 发明专利

JPS5376233A VARIABLE STAGE CARBURETOR 失效
公开(公告)号：JPS5376233A
公开(公告)日：1978-07-06
申请号：JP15199476
申请日：1976-12-20
申请人： HITACHI LTD
发明人： AOCHI YOSHIKAZU , NAGANAMI KENICHI , MISHIRO YASUSHI , TERANISHI TAKAO
IPC分类号： F02M7/22 , F02M19/08
摘要： PURPOSE:To decrease the variation of mixing ratio due to the variation of the venturi negative pressure by arranging the pressure control chamber formed of a fixed space in the vicinity of the nozzle communicating with the venturi and accelerating the air jet action.

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