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21. 发明专利

JPS5549558A ALTITUDE COMPENSATOR FOR CARBURETOR 失效
公开(公告)号：JPS5549558A
公开(公告)日：1980-04-10
申请号：JP12253878
申请日：1978-10-06
申请人： HITACHI LTD
发明人： HONDA YASUHIKO
IPC分类号： F02M7/28 , F02M7/20 , F02M7/24
摘要： PURPOSE:To adjust the rate of the displacement of metric needle valve to change in accordance with the air pressure approximately constant by restricting the scatter of displacements of the metric needle valve accompanying the dispersion of displacement of the detecting element such as bellows in the altitude compensator to actuate against the change of air density. CONSTITUTION:The pressure sensor 13 such as a bellows provided in the case 14 of altitude compensator 1 is expanded due to a drop of atmospheric pressure as the car runs from lowlands to highlands, the rod 17 is moved leftwards against an elastic force of the operation lever 19. The pressure sensor 13 is expanded to make the operation lever 19 contact with the metric needle 22, and when it is further expanded, the metric needle is moved leftwards against the spring 23, the orifice 21 is opened to feed compensating air to the main well 8 of carburetor through the feed port 4.

22. 发明专利

JPS5420242A SLOW FUEL SUPPLY SYSTEM FOR CARBURETOR 失效
公开(公告)号：JPS5420242A
公开(公告)日：1979-02-15
申请号：JP8411377
申请日：1977-07-15
申请人： HITACHI LTD
发明人： HONDA YASUHIKO
IPC分类号： F02M3/12 , F02M7/00
摘要： PURPOSE:To obtain a slow fuel supply system that thlps to give a smooth operation to an engine and to reduce the amount of fuel consumption and exhaust gas causing environmental pollution even if idle air-fuel mixture is made lean or an ignition lead angle is gained.

23. 发明专利

JPH06137171A THROTTLE ACTUATOR 失效
公开(公告)号：JPH06137171A
公开(公告)日：1994-05-17
申请号：JP31891592
申请日：1992-11-27
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KADOMUKAI YUUZOU , MINEGISHI TERUHIKO , TANAKA NAOYUKI , HONDA YASUHIKO
IPC分类号： F02D9/02 , B60K31/00 , F02D11/04 , F02D11/10 , F02D29/02 , F02D41/04 , F02D41/08 , F02D41/14 , F02D41/22
摘要： PURPOSE:To stabilize control by closely attaching an engaging part between a differential lever and an accelerator lever at normal time, and also interposing a predetermined gap in an engaging part between the differential lever and a throttle shaft, so as to ensure fine adjusting a throttle valve by an actuator. CONSTITUTION:In a throttle shaft 5 of a throttle valve 4 set up in a suction cylinder 2 of an engine, a differential lever 6 and an accelerator lever 7 are respectively turnably arranged at one end of this shaft 5, and a motor 13 is connected through an electromagnetic clutch 2 to the other end. The third lever part 63 of the differential lever 6 and an engaging part 71 of the accelerator lever 7 are closely attached by a differential spring 15. On the other hand, a gap is interposed between both the first/second lever parts 62, 63 of the differential lever 6 and an engaging part 51 of the throttle shaft 5. The gap is set to the dimension where the throttle valve 4 can be finely adjusted by the motor 13. In this way, both the first/second lever parts 62, 63 can function as each limiter of the upper/lower limits in a control range.

24. 发明专利

JPS5923052A Carburetor with mixture bypass fuel system 失效
标题翻译：具有混合旁路燃料系统的碳酸氢钠
公开(公告)号：JPS5923052A
公开(公告)日：1984-02-06
申请号：JP13224182
申请日：1982-07-30
申请人： Hitachi Ltd
发明人： HONDA YASUHIKO , ABE YASUHIKO
IPC分类号： F02M3/06 , F02M3/12
CPC分类号： F02M3/12
摘要： PURPOSE:To prevent an air-fuel ratio from fluctuating when a valve seat is opened, by a method wherein when closing a bypass mixture supplying passage, a fuel tending to stagnate in proximity to a valve seat is caused to flow out through a leak passage. CONSTITUTION:A mixture bypass fuel system is constituted of an air passage 8 communicated with a fuel nozzle hole 7, an air-adjusting screw 9 for adjusting the cross-sectional area of the passage 8, a solenoid valve 10, the valve seat 12 located in the passage 8 oppositely to a plunger 11 for the valve 10 and a bypass mixture supplying passage 13. In addition, the leak passage 14 bypassing the valve seat 12 is provided in the main body 1 of a carburetor. Accordingly, even when the solenoid valve 10 is closed, the fuel stagnating at a lower part of the plunger 11 automatically flows out into the passage 13 through the leak passage 14 and a leak passage 15.
摘要翻译：目的：为了防止当阀座打开时空燃比发生波动，通过这样一种方法，当关闭旁路混合物供应通道时，使靠近阀座的趋于停滞的燃料通过泄漏通道流出。构成：混合旁路燃料系统由与燃料喷嘴孔7连通的空气通道8，用于调节通道8的横截面积的调节螺钉9，电磁阀10，位于在通道8中与阀10的柱塞11相反，以及旁路混合物供给通道13.此外，在化油器的主体1中设置有旁通阀座12的泄漏通道14。因此，即使当电磁阀10闭合时，停止在柱塞11的下部的燃料也通过泄漏通道14和泄漏通道15自动流出到通道13中。

25. 发明专利

JPS56126653A 2-CYLINDER 2-FLOAT TYPE CARBURETOR 失效
公开(公告)号：JPS56126653A
公开(公告)日：1981-10-03
申请号：JP2967880
申请日：1980-03-07
申请人： HITACHI LTD
发明人： HONDA YASUHIKO , INOUE TADASHI , NIITSUMA SHIGETO , NAGANAMI KENICHI
IPC分类号： F02M5/02 , F02M13/04
摘要： PURPOSE:To reduce the influence of the variation of the oil level in operation by arranging the fuel feeding system to the primary side intake cylinder near the center position in the variation of the oil level in a pair of float chambers. CONSTITUTION:A primary side main jet 6 which feeds into a primary side intake cylinder 1, primary side main air bleed 7, and a primary side main well 8 are arranged close to the center line Z-Z in the variation of the oil level in the float chambers 3 and 4. The cross point 22 of the center line Z-Z with the oil level 20 is not shifted in turning and in acceleration, and when a car turns right, the oil level forms the a-a line lowering rightward is formed, and the maximum permissible angle theta2 is formed, increased markedly than usual, so exhaustion of fuel in turning is prevented, and the turning performance of the car can be improved.

26. 发明专利

JPS55107047A AIR PRESSURE COMPENSATOR OF CARBURETOR 失效
公开(公告)号：JPS55107047A
公开(公告)日：1980-08-16
申请号：JP1457879
申请日：1979-02-09
申请人： HITACHI LTD
发明人： HONDA YASUHIKO , KOMURO HIROSHI , YAMADA KINSAKU
IPC分类号： F02M7/28 , F02M7/22 , F02M7/24
摘要： PURPOSE:To adjust bleed and compensate air fuel ratio adequately in an air pressure compensator for changing air bleed to a carburetor in accordance with atmospheric air pressure, by communicating housings with each other through long slits. CONSTITUTION:An air compensator A is composed of a housing 12 with a built- in bellows 11, air vent 2 and housing 19 having a port 3 communicated with air bleed of a carburetor. The housing 19 involves a service lever 16 with which the bellows 11 comes in touch at the center, its one end being fixed to a shaft 17 and the other end being engaged with a measuring needle 22, thus the movement of bellows 11 is transferred to the needle 22. Both housings 12, 19 are communicated with each other through long slits and the variable movement of bellows 11 is transferred to the needle 22 by selecting the position of slits 25.

27. 发明专利

JPS54162029A EVAPORATED FUEL RELEASE PREVENTING APPARATUS OF CARBURETOR 失效
公开(公告)号：JPS54162029A
公开(公告)日：1979-12-22
申请号：JP7082578
申请日：1978-06-14
申请人： HITACHI LTD
发明人： HONDA YASUHIKO
IPC分类号： F02M5/08
摘要： PURPOSE:To prevent the release of evaporated fuel into the air by installing a valve body which opens and closes in communication with the turning of a throttle and introducing the fuel vapour which is generated in a float chamber into an intake cylinder in car traveling and into a canister in the stoppage of car traveling. CONSTITUTION:In idliing operation or stoppage of an engine, namely when a car is not in traveling state, the turning of a throttle valve 21 is little, and a vertical lever 19 rises up, and the right-hand end of a small lever 18 is in pushed-up state. Then, a large lever 16 is turned leftward by the force of a coil spring 17, and pushes down a valve shaft 11 against the spring force of a compression spring 12, and the lower surface of a valve body 10 is pressed onto the valve seat 15a. The communication between the space part of a float chamber 6 and a vent pipe 5 is intercepted, and said space part communicates to a canister passage 9. Accordingly, the adsorption of fuel vapour in the float chamber 6 onto the filler in the canister is kept, and the fuel vapour is not released outside, so environmental pollution can be prevented.

28. 发明专利

JPS6435058A CARBURETOR 失效
公开(公告)号：JPS6435058A
公开(公告)日：1989-02-06
申请号：JP19006087
申请日：1987-07-31
申请人： HITACHI LTD
发明人： SASAKI YASUSHI , HONDA YASUHIKO , OZAKI SHIGEMI
IPC分类号： F02M1/02
摘要： PURPOSE:To suppress disturbance of main air and to improve the accuracy of mixing ratio control through a choke valve by arranging a main air take-in port in the upstream of the choke valve and forming a main air path as an independent path. CONSTITUTION:Main system of a carburetor comprises a main jet 1 for measuring fuel, a main air bleed for measuring air and a Venturi 3 for mixing measured fuel and air and delivering mixture gas. Take-in port 5 of air to be measured through the main air bleed 2 is arranged in the upstream of a choke valve 4. An air path 7 for leading air through the take-in port 5 into a main air bleed chamber 6 is formed as an independent path. Consequently, air can be led through the take-in port 5 and the air path 7 into the main air bleed chamber 6 without influence of motion of the choke valve 4, resulting in suppression of disturbance of air flow.

29. 发明专利

JPS61182460A FUEL INJECTION ASSEMBLY 失效
公开(公告)号：JPS61182460A
公开(公告)日：1986-08-15
申请号：JP1997785
申请日：1985-02-06
申请人： HITACHI LTD
发明人： TANABE YOSHIYUKI , KASHIWATANI MINEO , HONDA YASUHIKO , MORITA KIYOMI
IPC分类号： F02M69/00 , F02M69/04
摘要： PURPOSE:To prevent deviation of fuel injected through 2 injecting valves and to improve distributing characteristics of fuel, by providing an isolating body through which the middle between 2 injection vlaves is interconnected to the upper peripheral part of a throttle valve when the throttle valve is fully opened. CONSTITUTION:A fuel injection assembly 10 comprises upper and lower bodies 12 and 14, and a suction passage 16 is formed in the two bodies. A suspension member 22 is integrally formed to the upper part 12, and 2 injection valves 24L and 24R are contained therein. A throttle valve stem 28, located in a position allowing a distance between extension lines of the axes of the two injecting valves 24L and 24R to be divided into 2 equal parts, is extended through the lower body 14 and a throttle valve 30 is secured thereto. In this constitution, the one side of an isolating body 32, formed with a flat laminar metal sheet bent in an L-shape at right angles, is mounted between the upper and lower bodied 12 and 14, and the other side is extended along a plane passing the central axis of the throttle stem 28. This forms a wall which equally divides a portion between the extension lines of the central axes of the two injecting valves 24L and 24R.

30. 发明专利

JPS5888443A HEAT-SENSING UNIT OF AUTO-CHOKE MECHANISM 失效
公开(公告)号：JPS5888443A
公开(公告)日：1983-05-26
申请号：JP18529181
申请日：1981-11-20
申请人： HITACHI LTD
发明人： HONDA YASUHIKO
IPC分类号： F02M1/10
摘要： PURPOSE:To prevent the leakage of cooling water in a top-closed cylindrical housing with a heat sensing body inside by holding the said housing and the heat-sensing body with elastic contact between parallel two elastic faces of a U-bent elastic plate for obtaining secure positioning. CONSTITUTION:In an auto-choke, a choke valve 1 and a throttle valve 2 of a carburetter are operated in linkage via a first idle cam 3, a coupling rod 14, and others, and openings of these valves 1 and 2 are properly controlled by the expansion of a heat-sensing body 18 in a heat-sensing body housing 4 into which engine cooling water is introduced via above-said cam 3 and others. At this point, the above-said housing 4 and the heat-sensing body 18 are held in one body at a fixed state by bringing an upper piece 22a and a lower piece 22b mutually faced on a frame piece 22 composed of a U-bent elastic plate respectively in contact with the top periphery of the housing 4 and the free surface of a projection 19 on the opening end of the heat-sensing body. This construction permits to prevent the leakage of engine cooling water by moving the heat- sensing body 18 relatively to the housing 4.

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