EP1096123A1 - Dispositif d'alimentation en carburant pour moteurs - Google Patents

Dispositif d'alimentation en carburant pour moteurs Download PDF

Info

Publication number
EP1096123A1
EP1096123A1 EP00119635A EP00119635A EP1096123A1 EP 1096123 A1 EP1096123 A1 EP 1096123A1 EP 00119635 A EP00119635 A EP 00119635A EP 00119635 A EP00119635 A EP 00119635A EP 1096123 A1 EP1096123 A1 EP 1096123A1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply apparatus
body case
devices
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00119635A
Other languages
German (de)
English (en)
Other versions
EP1096123B1 (fr
Inventor
Hideaki Nawa
Kazuhiko Nishimura
Satomi Wada
Yasunori Sakaue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Publication of EP1096123A1 publication Critical patent/EP1096123A1/fr
Application granted granted Critical
Publication of EP1096123B1 publication Critical patent/EP1096123B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus

Definitions

  • the present invention relates to a fuel supply apparatus for supplying fuel together with air to a combustion chamber of an engine to be used in vehicles such as motorcycles.
  • a fuel injection apparatus is adopted as one of fuel supply apparatus for engines of, for example, motorcycles.
  • This kind of fuel injection apparatus has a basic configuration including a throttle body having an air-intake passage, a fuel injection valve for injecting fuel into the air-intake passage, a fuel pump for supplying under pressure the fuel to the fuel injection valve, a pressure regulator for regulating the pressure of fuel to be supplied to the fuel injection valve, and a fuel filter for removing foreign substances included in the fuel to be supplied.
  • a fuel tank installing therein a fuel pump and a pressure regulator.
  • This kind of fuel tank accommodating the fuel pump and pressure regulator needs works of inserting and fixing the pump and the regulator (namely, constituent devices) into the tank. Additionally, the fuel tank has to be provided with members or parts for securing the constituent devices. This would raise a problem that a restriction is imposed on the design flexibility of the fuel tank to be mounted on a motorcycle of which appearance is regarded as important, and also deteriorate the workability of inserting the devices in the fuel tank. Such the fuel tank tends to increase in size in order to have therein a receiving space enough to accommodate the pump and regulator.
  • the fuel tank including the fuel pump is usually mounted on a motorcycle near a driver's side. Therefore, the noise produced by the fuel pump, particularly at idling, might be offensive to the driver's ears. On the other hand, at maintenance, the pump and the regulator have to be removed from the tank. This removal workability is also low.
  • a multiple throttle body 82 includes a plurality of air-intake passages 81 each internally provided with a throttle valve 80, a fuel distributing section 83 is fixedly disposed in one side of the throttle body 82, and a fuel supplying section 84 is fixedly disposed in the other side.
  • the fuel distributing section 83 includes a fuel distributing pipe 85 and a plurality of fuel injection valves 86 connected to the pipe 85.
  • the fuel supplying section 84 includes a fuel reservoir chamber 87, a fuel pump 88, a fuel filter 89, and a pressure regulator and others.
  • the multiple throttle body 82, the fuel distributing section 83, and the fuel supplying section 84 are united together as above in order to achieve the above purpose.
  • the devices constituting the fuel supplying section 84 namely, the fuel reservoir chamber 87, the fuel pump 88, the fuel filter 89, and the pressure regulator and others, are simply individually secured to the side of the throttle body 82 through a base member or directly by bands and screws (not shown), with the major parts of those devices 87-89 exposed to the outside.
  • the uniting means to only arrange the devices 87-89 constituting the fuel supplying section 84 in a line along the direction of the length of the multiple throttle body 82 and fix them by the bands and screws. This is merely the uniting in relation to placement of the constituent devices.
  • the devices 87-89 are exposed to the outside, so that measures against water and dust are insufficient and also protection against external impact is poor.
  • the devices 87-89 which are merely individually fixed to the throttle body 82 by bands and screws, come down or detach from the body 82 by vibration or impact.
  • the united devices 87-89 are often mounted on the body or frame of a motorcycle with the devices exposed to the outside. Even if the devices 87-89 are covered in a secondary manner, accordingly, muddy water and dust may enter the gaps between the cover and the devices 87-89, then adhering to the devices. Thus, such the secondary cover could not provide desired effects.
  • the devices 87-89 individually need works for attaching the bands and screws and tightening the screws, which results in troublesome attaching/detaching works of the devices 87-89.
  • the present invention has been made in view of the above circumstances and has an object to overcome the above problems and to provide a fuel supply apparatus for engines, wherein fuel supplying devices can be securely fixed in the throttle body in unitary relation and appropriately protected from muddy water, dust, external impact, thereby to improve workability of attaching/detaching the devices to/from the throttle body.
  • a fuel supply apparatus for an engine including fuel supplying devices provided in unitary relation with a throttle body including an air-intake passage and a throttle valve disposed in the passage, characterized by including: a body case integrally provided with the throttle body and configured for fixedly assembling the fuel supplying devices therein, the body case being provided with openings for allowing insertion and removal of the fuel supplying devices in and from the body case, recesses for holding the fuel supplying devices therein, and a cover member for closing the openings.
  • the above apparatus is so configured that the fuel supplying devices are inserted through the openings in the body case integral with the throttle body and fitted in the corresponding recesses, so that the fuel supplying devices can be easily fixed in place with respect to the body.
  • the cover members are attached to the body case to close the openings respectively, the fuel supplying devices can be fixedly assembled in the body case which covers them.
  • the fuel supplying devices can be easily removed from the body case by detachment of the cover members.
  • the fuel supplying devices configured as a unit with respect to the throttle body can be securely fixed with proper protection from muddy water, dust, and external impact. Furthermore, the workability of attaching/detaching the devices to/from the throttle body can be improved.
  • the throttle body and the body case are integrally made of resin.
  • the above apparatus including the throttle body and the body case which are integrally made of resin, can be relatively easily manufactured at low cost and achieve light weight.
  • the fuel supply apparatus can also provide an improved workability of mounting/demounting of the apparatus on/from a vehicle, and therefore contribute to light weight of the vehicle.
  • the fuel supplying devices include at least a fuel pump and a pressure regulator.
  • the fuel supply apparatus since at least the fuel pump and the pressure regulator are united with the throttle body so as to be handled as a one-piece unit with the throttle body, the fuel supply apparatus needs no structure of fixing them to another members such as a fuel tank. Accordingly, the fuel tank can be downsized, enhancing the degree of flexibility in vehicle design including the fuel supplying devices. The noise which is generated by the fuel pump at idling can also be reduced.
  • the body case is provided with a recess for holding the fuel pump therein and a terminal for current supply, the terminal being disposed adjacent to the recess and connected with an electrode terminal of the fuel pump when the fuel pump is fitted in the recess.
  • insertion of the fuel pump in the recess of the body case allows the electrode terminal of the pump to be connected with the current supplying terminal, which can save time and labor for wiring connection.
  • the number of parts and the assembling steps relating to the electrical wiring can be reduced, achieving a shortened electrical wiring for the fuel pump.
  • the workability of attachment or detachment of the fuel pump to or from the throttle body can be enhanced.
  • the body case is provided with an inlet for admitting fuel from a fuel tank connected with the fuel supply apparatus, a fuel passage for allowing flow of the fuel admitted through the inlet to the fuel pump, and an outlet for discharging excess fuel produced in the pressure regulator to return the fuel to the fuel tank.
  • a fuel injection valve is disposed adjacent to the throttle body, and a fuel supply port through which the fuel is supplied to the fuel injection valve is provided in the body case.
  • the fuel is supplied to the fuel injection valve disposed adjacent to the throttle body through the fuel supply port of the body case. Accordingly, the fuel injection valve can be directly provided in the body case integral with the throttle body. Since the fuel injection valve is also provided in association with the air-intake passage of the throttle body, those throttle body, fuel supplying devices, and fuel injection valve can be assembled. Accordingly, the throttle valve, the fuel supplying devices, and the fuel injection valve can be adjusted according to variations in respective qualities and performances, enabling control of the performance and quality of the assembled or united fuel supply apparatus.
  • Fig. 1 is a schematic partially sectional view of an engine 11 and a united fuel supply apparatus 12.
  • the engine 11 is provided with a cylinder block 13 and a cylinder head 14.
  • the cylinder block 13 includes a piston 15, a connecting rod 16, and a crankshaft 17 connected to the piston 15 through the rod 16.
  • the cylinder head 14 is formed with an air-intake port 19 through which a combustible mixture of air and fuel is fed into a combustion chamber 18, an air-intake valve 20 for opening/closing the port 19, a discharge port 21 for discharging burnt gas from the combustion chamber 18, a discharge valve 22 for opening/closing the port 21, and a valve driving mechanism 23 for driving the valves 20 and 22 respectively to open and close.
  • the fuel supply apparatus 12 is operated to supply the combustible fuel-air mixture into the air-intake port 19.
  • the fuel supply apparatus 12 is provided with a throttle body 26 including an air-intake passage 24 and a throttle valve 25 disposed in the passage 24, and a body case 27 for providing a plurality of fuel supplying devices in unitary relation with respect to the body 26.
  • the throttle body 26 and the body case 27 are integrally molded of resin.
  • An outlet 24a of the air-intake passage 24 is connected with an end (an inlet) of an air-intake manifold 28 made of resin, and another end (an outlet) of the manifold 28 is connected with the air-intake port 19, thus providing communication between the air-intake passage 24 and the air-intake port 19.
  • Fig. 2 is a front view of the fuel supply apparatus 12, showing the side of the throttle body 26 in the present embodiment.
  • Fig. 3 is a top view of the same of Fig. 2.
  • Fig. 4 is a sectional view of the throttle body 26 of the fuel supply apparatus 12 taken along line IV-IV in Fig. 3.
  • the throttle valve 25 is a piston valve which is movable in a perpendicular direction to the air-intake passage 24.
  • the throttle body 26 includes an integral cylinder 29 which is perpendicularly communicated with the passage 24.
  • the throttle valve 25 is slidably assembled in the cylinder 29 (see Fig. 1).
  • a cover 32 is fitted in the opening of the cylinder 29 opposite to the air-intake passage 24.
  • a spring 30 provided between the throttle valve 25 and the cover 32 normally urges the valve 25 downward (in Fig. 1) to close the air-intake passage 24.
  • a wire 31 connected with the valve 25 is joined to a handlebar (not shown) which is controlled by a driver.
  • a wire guide 32a integral with the cover 32 serves to guide the wire 31 to the handlebar. When this wire 31 is pulled by operation of the handlebar, the throttle valve 25 is moved upward against the urging force of the spring 30, thereby opening the air-intake passage 24. Thus, outside air is taken in the air-intake passage 24.
  • the throttle body 26 is also provided with a bypass 33 accompanying the air-intake passage 24 to bypass around the throttle valve 25.
  • An idle speed control valve (ISC valve) 34 is fixed to the throttle body 26 by hot caulking. This ISC valve 34 is electrically controlled to open and close the bypass 33. At a full close of the throttle valve 25, namely, at idling of the engine 11, the ISC valve 34 is controlled to make fine regulation of the amount of intake air to be supplied to the engine 11.
  • a fuel injection valve (injector) 35 is disposed adjacent to the outlet 24a of the air-intake passage 24.
  • the injector 35 is fitted in a hole 28a which is an inlet of the air-intake manifold 28.
  • This injector 35 is electrically controlled to inject fuel into the air-intake manifold 28. Accordingly, the fuel is injected from the injector 35 into the air allowed to flow from the passage 24 to the manifold 28, forming a combustible fuel-air mixture, which is taken in the combustion chamber 18 upon open of the air-intake valve 20.
  • Fig. 5 is a back view of the apparatus 12, corresponding to a front view of the body case 27.
  • Fig. 6 a left side view of the apparatus 12 of Fig. 5.
  • Fig. 7 is a sectional view of the apparatus 12 taken along line VII-VII in Fig. 6.
  • Fig. 8 is a sectional view of a part the apparatus 12 taken along line VIII-VIII in Fig. 6.
  • Fig. 9 is an enlarged sectional view of a part of the apparatus 12 taken along line IX-IX in Fig. 7.
  • the body case 27 is constructed of a main case 36, a lower cover 37 fixed to the underside of the main case 36, a first opening 38 formed in the left side face (in Fig. 7) of the main case 36, a plug 39 for closing the opening 38, a second opening 40 formed in the front face of the main case 36, a front cover 41 for closing the second opening 40, and an electrical wiring connector 43 disposed in the right side face (in Fig. 5) of the main case 36.
  • the plug 39 is made of resin with an integral outlet pipe 39a serving as an outlet for fuel.
  • the lower cover 37 is made of resin with an integral inlet pipe 37a serving as an inlet for fuel. As shown in Fig.
  • those inlet pipe 37a and outlet pipe 39a are connected to a fuel tank 44 mounted on the motorcycle by way of pipes 45 and 46 respectively.
  • the inlet pipe 37a serves to admit the fuel transmitted from the fuel tank 44 into the body case 27.
  • the outlet pipe 39a serves to discharge the fuel out of the body case 27.
  • the inlet pipe 37a is disposed below the outlet pipe 39a.
  • the main case 36 fixedly holds therein fuel supplying devices, namely, a fuel pump 61, a fuel filter 62, a pressure regulator 63, and an electronic control unit (ECU) 64.
  • Each of the devices 61-63 has a substantially cylindrical shape, and the ECU 64 has a box shape.
  • the fuel filter 62 and the pressure regulator 63 are united together by caulking. This united fuel filter 62 and pressure regulator 63 is arranged above and perpendicularly to the fuel pump 61.
  • a discharge port 61a of the fuel pump 61 is inserted in an admission port 62a of the fuel filter 62 in a mutual engagement relation.
  • the fuel pump 61 is directly connected with the fuel filter 62.
  • the connecting part between the pump 61 and the filter 62 is sealed with an O-ring not shown.
  • the fuel pump 61 is electrically driven to discharge, at high pressure, the fuel transmitted from the fuel tank 44.
  • the fuel filter 62 serves to remove foreign substances included in the fuel discharged from the fuel pump 61.
  • the pressure regulator 63 serves to regulate the pressure of the fuel discharged from the fuel pump 61 at a predetermined level. Excess fuel resulting from the pressure regulation is discharged out of the fuel supply apparatus 12 through the outlet pipe 39a.
  • the ECU 64 controls the injector 35 to control fuel injection.
  • the ECU 64 contains a pressure sensor not shown.
  • the main case 36 is provided with a fuel supply port 57 through which the fuel discharged by the pump 61 is supplied to the injector 35.
  • the lower cover 37 includes a fuel passage 37b which allows the fuel having entered the body case 27 through the inlet pipe 37a to flow toward the fuel pump 61 and a projection 37c which is engaged with the underside of the pump 61 to press it upward in Fig. 7.
  • the fuel pump 61 having the above structure When the fuel pump 61 having the above structure is driven, the fuel is admitted into the body case 27 through the inlet pipe 37a, flowing through the fuel passage 37b, and sucked into the fuel pump 61 through a suction port 61b of the pump 61.
  • the fuel that is increased in pressure by the fuel pump 61 is discharged from the discharge port 61a, cleaned by the fuel filter 62, and succeedingly regulated in pressure by the pressure regulator 63. Then, the fuel is supplied to the injector 35 through the fuel supply port 57.
  • the excess fuel produced in the pressure regulator 63 is discharged through the outlet pipe 39a.
  • Fig. 10 is a sectional view of only the body case 27.
  • Fig. 11 is a sectional view of the throttle body 26 with the body case 27. It is to be noted that the body case 27 is illustrated in Figs. 10 and 11 in an exploded state into the main case 36 and the lower cover 37.
  • the main case 36 is internally provided with a first recess 65, a second recess 66, and a third recess 67, each having a shape matching to each of the outside shapes of the devices 61-64.
  • the first opening 38 is used for insertion/removal of a combination of the fuel filter 62 and the pressure regulator 63 in/from the first recess 65.
  • the main case 36 also has a third opening 58 used for insertion/removal of the fuel pump 61 in/from the third recess 67 from below.
  • the main case 36 is provided with current supply terminals 70 disposed adjacently to a part of the third recess 67 so as to come into alignment with electrode terminals 71 of the pump 61 when inserted in the third recess 67.
  • the terminals 70 of the main case 36 are connected with the terminals 71 of the pump 61.
  • the second recess 66 is provided with an electrode terminal 72 which is connected to an electrode terminal not shown of the ECU 64 when inserted in the second recess 66.
  • the main case 36 is provided with a piping cap 73 integrally formed therewith.
  • This piping cap 73 has a fuel passage 73a communicating with the fuel supply port 57.
  • the piping cap 73 is disposed covering the head portion of the injector 35 placed in the air-intake manifold 28, thereby allowing the flow of the fuel from the fuel supply port 57 to the injector 35.
  • the piping cap 73 is provided in advance with a wiring 74 which is connected to an electrode terminal of the injector 35.
  • the above fuel supplying devices 61-64 are inserted and fixed in place in the body case 27 in the following manner.
  • the fuel filter 62 and the pressure regulator 63 are first inserted into the first recess 65 of the main case 36 through the first opening 38.
  • the plug 39 is then fitted in the first opening 38 to close it.
  • the plug 39 can be fixed there by hot plate welding.
  • the fuel pump 61 is inserted into the third recess 67 of the main case 36 through the third opening 58.
  • the discharge port 61a of the pump 61 is thus engaged in the admission port 62a of the fuel filter 62 and therefore the electrode terminals 71 of the pump 61 are connected with the current supply terminals 70 respectively.
  • the lower cover 37 is fixed to the underside of the main case 36, closing the third opening 58. Hot plate welding can also be adopted to fix the lower cover 37 to the main case 36 in the present embodiment. With the lower cover 37 fixed as above, the projection 37c of the cover 37 presses the bottom of the fuel pump 61, thus securing the pump 61 in the third recess 67.
  • the ECU 64 is inserted in the second recess 66 through the second opening 40 and the electrode terminal of the ECU 64 is connected with the electrode terminal 72.
  • the front cover 41 is fixed to the front face of the main case 36, thereby closing the second opening 64.
  • hot plate welding can be adopted to fix the front cover 41.
  • the plug 39, the front cover 41, and the lower cover 37 are provided for correspondingly closing the first, second, and third openings 38, 40, and 58. They correspond to cover members of the invention.
  • the fuel supply apparatus 12 is configured such that the fuel supplying devices, namely, the fuel pump 61, the fuel filter 62, the pressure regulator 63, and the ECU 64 are inserted into the body case 27 formed integrally with the throttle body 26 through the first, second, and third openings 38, 40, and 58 respectively and are fitted in the corresponding first, second, and third recesses 65, 66, and 67. Accordingly, the devices 61-64 can be easily positioned in place. After that, the openings 38, 40, and 58 are closed by the plug 39, the front cover 41, and the lower cover 37, respectively, which are welded to the body case 27. The devices 61-64 can thus be fixedly assembled in the body case 27 which entirely covers them.
  • the fuel supplying devices namely, the fuel pump 61, the fuel filter 62, the pressure regulator 63, and the ECU 64 are inserted into the body case 27 formed integrally with the throttle body 26 through the first, second, and third openings 38, 40, and 58 respectively and are fitted in the
  • the fuel supply apparatus 12 in the present embodiment can be reduced in the number of parts and the number of assembling steps related to the fixing operation, as compared with the conventional apparatus wherein the devices 87-89 are individually fixed by belts and screws. This makes it possible to improve an attaching workability of the devices 61-64 to the throttle body 26.
  • the devices 61-64 can also be protected properly from muddy water, dust, and external impact.
  • the fuel supply apparatus 12 can be of high weather resistance, durability, and impact resistance, and thus of enhanced performance and quality.
  • the devices 61-64 can be united with the throttle body 26, which can provide a compact and simple appearance.
  • the devices 61-64 can be surely fixed in place.
  • the fuel supply apparatus 12 with a compact integral configuration as mentioned above can achieve space savings on a motorcycle and also facilitate the mounting works to the motorcycle body.
  • the devices 61-64 can be easily removed from the body case 27 by taking off the covers 39, 41, and 37 to open the openings 38, 40, and 58 respectively. This can also improve the detaching workability of the devices 61-64 from the throttle body 26.
  • the conventional fuel injection apparatus is configured such that the fuel reservoir chamber 87, the fuel pump 88, the fuel filter 89 and others are individually secured to one side of the throttle body 82 by the bands and screws. This would deteriorate the workability of mounting or demounting the devices and cause most of the devices 87-89 to be exposed to the outside, resulting in poor water-resistance, impact-resistance, and dust-resistance.
  • the fuel supply apparatus 12 in the present embodiment can provide a good workability of attaching/detaching the devices 61-64, it can achieve the uniting which is superior in water-resistance, dust-resistance, and impact-resistance to the conventional apparatus.
  • the uniting to configure the fuel supply apparatus 12 in the present embodiment includes not only uniting of the devices 61-64 for the placement with respect to the throttle body 26 but also uniting of those devices for the purpose of improvements in the weather-resistance, durability, impact-resistance, appearance, and handling workability.
  • the throttle body 26 and the main case 36 of the body case 27 are made of resin in one-piece, design and manufacture of the throttle body 26 and the main case 36 can be relatively facilitated and also both the bodies 26 and 36 can be reduced in weight.
  • the use of the air-intake manifold 28 made of resin can save weight of the unit including the manifold 28. This can also reduce the cost of the fuel supply apparatus 12, improve the workability of mounting or demounting the apparatus 12 with respect to the motorcycle, and contribute to reduction in weight of the motorcycle.
  • the fuel pump 61 and the pressure regulator 63 are configured in unitary relation with the throttle body 26, which allows the devices 61 and 63 to be handled as a one-piece unit with the throttle body 26. This can eliminate the need of any additional structure for fixing the devices 61 and 63 to other devices such as the fuel tank 44. Accordingly, the external appearance of the fuel tank 44 is not spoiled, enhancing the degree of flexibility in design of a vehicle including the fuel supply apparatus 12.
  • the fuel pump 61 and the pressure regulator 63 are not accommodated in the fuel tank 44, so that the fuel tank 44 can be reduced in size. Since the fuel pump 61 is assembled inside the body case 27, furthermore, the reduction of the noise by the pump 61 at idling can be achieved.
  • the electrode terminal 71 of the pump 61 are correspondingly connected with the current feeding terminal 70. This makes it possible to save time and labor for the wiring connection relating to the fuel pump 61.
  • the ECU 64 is fitted in the second recess 66 of the body case 27, while the electrode terminal of the ECU 64 is connected with the electrode terminal 72, resulting in a saving in time and labor for the wiring connection relating to the ECU 64.
  • the ECU 64 is assembled in the body case 27 with the above wiring connection, and the fuel pump 61 and the injector 35 having an electrical relation to the ECU 64 are disposed adjacent to the body case 27, which can shorten the length of the electrical wiring.
  • the body case 27 is provided with the inlet pipe 37a and the fuel passage 37b related to the fuel pump 61 and the outlet pipe 39a related to the pressure regulator 63.
  • the fuel pump 61, the fuel filter 62, and the pressure regulator 63 are directly connected with one another without the use of piping, so that the arrangement of fuel piping for the fuel supplying devices can be simplified. Therefore, the number of parts and the number of assembling steps for the fuel piping can be reduced, which allows further improvements in the workability of attaching/detaching the devices 61-63 to/from the throttle body 26.
  • the high pressure fuel piping section constituted of the fuel pump 61 and others are placed inside the body case 27 without exposure to the outside, the fuel piping section can be properly protected from the external impact.
  • the injector 35 disposed adjacent to the throttle body 26 is supplied with fuel through the fuel supply port 57 of the body case 27 and the piping cap 73.
  • the injector 35 is fitted in the piping cap 73 and thus united with the body case 27.
  • the injector 35 is also disposed in relation to the air-intake passage 24 of the throttle body 26 through the air-intake manifold 28. Accordingly, the injector 35 and the fuel supplying devices 61-64 are assembled in the body case 27 in connection with the throttle body 26. This allows adjustment of the throttle valve 25 and the above devices 35 and 61-64 according to variations in respective quality and performance, thereby enabling control of the performance and quality of the assembled fuel supply apparatus 12.
  • the injector 35 is fitted in the hole 28a of the air-intake manifold 28 and also covered by the piping cap 73 of the body case 27. Since the injector 35 is not exposed to the outside, accordingly, the water-resistance, dust-resistance, and impact-resistance of the injector 35 can be enhanced as well as those of the other fuel supplying devices 61-64.
  • the injector 35 is fitted in the hole 28a of the air-intake manifold 28 communicated to the air-intake passage 24 such that the end of the injector 35 is positioned adjacently to the outlet 24a of the passage 24, while the head of the injector 35 is inserted in the piping cap 73 of the body case 27, thus allowing the injector 35 to be included in the united fuel supply apparatus 12.
  • FIG. 12 A fuel supply apparatus 76 is so configured that the injector 35 is disposed with its end fitted in a hole 19a formed near the air-intake port 19 of the cylinder head 14, instead of being fitted in the air-intake manifold 28, while the head of the injector 35 is fitted in the end portion of the fuel piping 75 extending from the fuel supply port 57 of the body case 27.
  • the injector 35 may be included in the united apparatus 76.
  • the ECU 64 is assembled in the body case 27 as one of the fuel supplying devices to be used for fuel injection control, the ECU 64 may be separately arranged from the united fuel supply apparatus.
  • the injector 35 is provided in the piping cap 73 of the body case 27 as a fuel supplying device.
  • the injector 35 may be arranged separately from the united fuel supply apparatus.
  • throttle valve 25 used in the above embodiment is a piston valve, it may be a butterfly valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP20000119635 1999-10-26 2000-09-08 Dispositif d'alimentation en carburant pour moteurs Expired - Lifetime EP1096123B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30367899 1999-10-26
JP30367899A JP3748747B2 (ja) 1999-10-26 1999-10-26 エンジンの燃料供給装置

Publications (2)

Publication Number Publication Date
EP1096123A1 true EP1096123A1 (fr) 2001-05-02
EP1096123B1 EP1096123B1 (fr) 2002-01-02

Family

ID=17923928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000119635 Expired - Lifetime EP1096123B1 (fr) 1999-10-26 2000-09-08 Dispositif d'alimentation en carburant pour moteurs

Country Status (3)

Country Link
EP (1) EP1096123B1 (fr)
JP (1) JP3748747B2 (fr)
ES (1) ES2170046T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918567A1 (fr) * 2006-10-27 2008-05-07 Delphi Technologies, Inc. Module d'acheminement de carburant
DE10111707B4 (de) * 2000-03-16 2008-06-26 Aisan Kogyo Kabushiki Kaisha, Obu Luft-/Kraftstoffgemisch-Steuervorrichtung für Motoren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688290B2 (en) * 2002-01-31 2004-02-10 Visteon Global Technologies, Inc. Integrated fuel delivery and electronic powertrain control module and method of manufacture

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256838A (ja) * 1989-03-28 1990-10-17 Honda Motor Co Ltd 燃料噴射エンジン用スロットルボディ
DE4201401A1 (de) * 1992-01-21 1993-07-22 Bosch Gmbh Robert Foerderaggregat
US5482021A (en) * 1993-11-11 1996-01-09 Walbro Corporation Air/fuel handling system for fuel injection engine
JPH10122101A (ja) * 1996-10-18 1998-05-12 Keihin Corp 自動二輪車における燃料噴射装置
DE19820421A1 (de) * 1997-05-07 1998-11-12 Hitachi Ltd Drosselklappenvorrichtung für Verbrennungsmotoren
JPH11303702A (ja) * 1998-04-17 1999-11-02 Keihin Corp 二輪車用燃料噴射装置におけるスロットルボデー

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256838A (ja) * 1989-03-28 1990-10-17 Honda Motor Co Ltd 燃料噴射エンジン用スロットルボディ
DE4201401A1 (de) * 1992-01-21 1993-07-22 Bosch Gmbh Robert Foerderaggregat
US5482021A (en) * 1993-11-11 1996-01-09 Walbro Corporation Air/fuel handling system for fuel injection engine
JPH10122101A (ja) * 1996-10-18 1998-05-12 Keihin Corp 自動二輪車における燃料噴射装置
DE19820421A1 (de) * 1997-05-07 1998-11-12 Hitachi Ltd Drosselklappenvorrichtung für Verbrennungsmotoren
JPH11303702A (ja) * 1998-04-17 1999-11-02 Keihin Corp 二輪車用燃料噴射装置におけるスロットルボデー

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111707B4 (de) * 2000-03-16 2008-06-26 Aisan Kogyo Kabushiki Kaisha, Obu Luft-/Kraftstoffgemisch-Steuervorrichtung für Motoren
EP1918567A1 (fr) * 2006-10-27 2008-05-07 Delphi Technologies, Inc. Module d'acheminement de carburant

Also Published As

Publication number Publication date
EP1096123B1 (fr) 2002-01-02
JP2001123919A (ja) 2001-05-08
ES2170046T3 (es) 2002-08-01
JP3748747B2 (ja) 2006-02-22

Similar Documents

Publication Publication Date Title
US6308686B1 (en) Intake manifold with internal fuel rail and injectors
US5664533A (en) Air intake device for an internal combustion engine
US5996543A (en) Intake device to which engine ECU is fixed and method of assembling the same
US5908017A (en) Intake system mounting construction of engine
US6499473B2 (en) Intake manifold of outboard motor
EP1096123B1 (fr) Dispositif d'alimentation en carburant pour moteurs
US6971371B2 (en) Air-fuel mixing and delivery apparatus for an internal combustion engine
US6494184B2 (en) Air-fuel mixture control device of engine
JP3466072B2 (ja) 電装品の取付構造
JP3473642B2 (ja) 燃料噴射装置
US20030230285A1 (en) Integrated fuel module wire harness and carrier gasket for vehicle intake manifold
EP1681459B1 (fr) Dispositif d'alimentation en carburant, vehicule et procede d'assemblage de dispositif d'alimentation en carburant
US6105562A (en) Starting control valve assembly for a multiple throttle
JPWO2002040846A1 (ja) 内燃機関用吸気モジュール及びその部材並びに電子制御式スロットル装置
JPH1047185A (ja) 内燃機関用燃料供給装置
KR20000053107A (ko) 밸브유니트
US6089202A (en) Air-supply module for internal combustion engine
JP3084899B2 (ja) 内燃機関の燃料供給装置
JP2001234761A (ja) 内燃機関用モジュール及び吸気装置
US6883501B2 (en) Throttle and fuel injector assembly
JP3356241B2 (ja) 内燃機関の吸気装置
JPH08210200A (ja) 内燃機関の吸気装置
JP3226662B2 (ja) 車両における潤滑油供給装置
JP3074076B2 (ja) 自動二輪車用エンジンの潤滑油供給装置
JP3546557B2 (ja) 内燃機関の燃料供給装置及び燃料供給方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010411

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010622

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): ES FR IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

LTIE Lt: invalidation of european patent or patent extension
AKX Designation fees paid

Free format text: ES FR IT

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2170046

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060908

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060930

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20061003

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071001

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070908