公开(公告)号：US4440697A

公开(公告)日：1984-04-03

申请号：US460766

申请日：1983-01-25

Applicant: Yoshihiro Sakurai

Inventor： Yoshihiro Sakurai

IPC: F02M7/08

CPC classification number: F02M7/08

Abstract: A multi-fuel carburetor embodying a number of improved accelerating pump features. In accordance with one of these features, the accelerating pump discharge is located upstream of the venturi section and is directed in such a way that the depositing of fuel on the throttle valve is minimized and improved distribution to the associated manifold is achieved. In accordance with another feature, the accelerating pump is operated by a linkage which causes the accelerating to begin its discharge stroke before the throttle valve is opened. As another feature, the output of the accelerating pump may be conveniently varied by using a variable bypass in the accelerating pump discharge circuit. As yet another feature, the back or non-pumping side of the accelerating pump is vented to a fuel bowl so as to minimize leakage and to insure return of any fuel that leak passed the accelerating pump to the fuel bowl.

Abstract translation: 一种多燃料化油器，体现了许多改进的加速泵特性。 根据这些特征中的一个，加速泵排放位于文丘里管部分的上游并且被引导成使得节流阀上的燃料沉积最小化并且实现了对相关歧管的改进的分配。 根据另一特征，加速泵通过连杆操作，该联动装置在节流阀打开之前使加速开始排放冲程。 作为另一个特征，可以通过在加速泵排出回路中使用可变旁路来方便地改变加速泵的输出。 作为另一个特征，加速泵的后部或非泵送侧被排放到燃料碗中，以便使泄漏最小化并且确保将通过加速泵的泄漏的任何燃料返回到燃料碗。

公开(公告)号：US4362673A

公开(公告)日：1982-12-07

申请号：US286700

申请日：1981-07-24

Applicant: Walter Schauer

Inventor： Walter Schauer

IPC: F02M7/08

CPC classification number: F02M7/08

Abstract: A carburetor comprising an accelerator pump having a working chamber containing fuel and a piston displaceable in the working chamber to discharge fuel therefrom to an inlet passage of the carburetor. A sleeve is secured to the carburetor housing at one end of the working chamber and the piston is slidably guided by the sleeve for movement into and out of the chamber. A sealing ring adjoins the sleeve and includes a free sealing lip directed into the chamber and sealingly bearing against the piston. In order to vary the amount of fuel delivered to the inlet passage for a given stroke of the piston, a piston and sleeve of different diameter are employed while the linkage mechanism between the throttle valve and the piston can remain without change.

Abstract translation: 一种化油器，包括具有包含燃料的工作室的加速器泵和可在工作室中移动的活塞，以将燃料从其中排出到化油器的入口通道。 套筒在工作室的一端固定在化油器壳体上，活塞由套筒可滑动地引导以移动和移出腔室。 密封圈与套筒相邻并且包括引导到腔室中的自由密封唇缘并且密封地抵靠活塞。 为了改变在活塞的给定行程下输送到入口通道的燃料量，使用不同直径的活塞和套筒，而节流阀和活塞之间的连杆机构可以保持不变。

公开(公告)号：US4285887A

公开(公告)日：1981-08-25

申请号：US113041

申请日：1980-01-17

Applicant: Kiyoshi Akiya

Inventor： Kiyoshi Akiya

IPC: F02M3/12 ,  F02M7/08

CPC classification number: F02M7/08 ,  F02M3/12 ,  Y10S261/39

Abstract: A carburetor herein disclosed includes a low speed spray aperture defined on the side wall of an intake duct at a position opposed to a throttle valve inside the intake duct and feeding a fuel for low speed operation in accordance with the degree of opening of the throttle valve, and a by-pass passage having, on the side wall portion of the intake duct, an intake port and a controlling stream spray port whereby the former is defined on the upstream side of the throttle valve and the latter, on the downstream side of the throttle valve. The by-pass passage incorporates therein a controlling nozzle which sprays a jet stream towards the controlling steam spray port. In accordance with an embodiment of the invention, an acceleration nozzle is additionally disposed in the by-pass passage, the nozzle opening into the by-pass passage on the upstream side of the controlling nozzle and spraying an acceleration fuel into the by-pass passage. In accordance with another embodiment of the invention, the intake duct is connected with an intake manifold having branch conduits leading to respective combustion chambers of a plurality of cylinders of an engine. The bypass passage has a plurality of controlling stream spray ports, each of which opens into each of the branch conduits.

Abstract translation: 本文公开的化油器包括限定在进气管道的侧壁上的低速喷射孔，其在与进气管道内的节流阀相对的位置处，并且根据节气门的开度供给用于低速运转的燃料 以及在进气管的侧壁部分具有进气口和控制流​​喷射口的旁路通道，由此在节流阀的上游侧和下游侧限定了前者，在下游侧 节流阀。 旁路通道内装有一个控制喷嘴，该喷嘴将喷射流喷射到控制蒸汽喷雾口。 根据本发明的实施例，加速喷嘴另外设置在旁通通道中，喷嘴开口进入控制喷嘴上游侧的旁通通道，并将加速燃料喷射到旁路通道 。 根据本发明的另一个实施例，进气管与具有分支管道的进气歧管连接，导管通向发动机的多个气缸的相应的燃烧室。 旁路通道具有多个控制流喷射口，每个控制流喷射口通向每个分支管道。

公开(公告)号：US4225535A

公开(公告)日：1980-09-30

申请号：US926112

申请日：1978-07-19

Applicant: Takeshi Takamaru ,  Mineo Kashiwaya ,  Kiyomi Morita ,  Seijl Oobayashi

Inventor： Takeshi Takamaru ,  Mineo Kashiwaya ,  Kiyomi Morita ,  Seijl Oobayashi

IPC: F02M7/087 ,  F02M7/08

CPC classification number: F02M7/087

Abstract: In an acceleration pump of a carburetor for an internal combustion engine including a cylinder and a piston reciprocatorily inserted in the cylinder, the piston is formed in its upper portion with a transverse bore for a stopper member to extend therethrough to be urged by a heat sensitive element to move in a direction at right angles to the direction of reciprocatory movement of the piston, so that additional fuel for acceleration can be supplied to the engine in a quantity which is accurately corrected to accommodate itself to changes in ambient temperature, by means of the heat sensitive element. The transverse bore is formed at its top wall and bottom wall with projections, and the stopper member is formed at its upper surface and lower surface with depressed portions, so as to enable the lengths of the downward and upward strokes of the piston to be controlled in accordance with changes in ambient temperature. Thus the acceleration pump is capable of supplying to the engine additional fuel for acceleration in a quantity which is corrected to accommodate itself for changes in ambient temperature.

Abstract translation: 在用于内燃机的化油器的加速泵中，该内燃机包括气缸和往复运动地插入气缸中的活塞，活塞在其上部形成有用于止动件延伸穿过的横向孔，以被热敏感 元件在与活塞的往复运动方向成直角的方向上移动，从而可以将附加的用于加速的燃料以可精确校正的量供给发动机，从而通过借助于 热敏元件。 横向孔在其顶壁和底壁上形成有突起，并且止动构件在其上表面和下表面形成有凹陷部分，以便能够控制活塞的向下和向上冲程的长度 根据环境温度的变化。 因此，加速泵能够向发动机提供额外的加速燃料，其量被校正以适应环境温度的变化。

公开(公告)号：US4179245A

公开(公告)日：1979-12-18

申请号：US824829

申请日：1977-08-15

Applicant: William A. Fuller

Inventor： William A. Fuller

IPC: F02M7/087 ,  F02M7/08

CPC classification number: F02M7/087 ,  F02D2200/0606

Abstract: An accelerating pump system is shown having a chamber into which fuel from a fuel reservoir of fuel bowl is drawn and then, when and as required, ejected, as by a displaceable diaphragm within said chamber, into a passage leading to accelerating fuel nozzle structure for discharge into the induction passage of the related carburetor or fuel metering means; a vent passage serves to communicate between the fuel reservoir and the chamber as to enable a portion of the fuel within the chamber to be returned to the fuel reservoir when the diaphragm is being displaced for ejecting fuel into the said passage; a thermostatic valve serves to preclude such communication between the fuel reservoir and the chamber except when the fuel temperature (employed as an indicia of engine and indirectly ambient temperature) within the chamber attains a predetermined relatively elevated temperature.

Abstract translation: 示出了一个加速泵系统，其具有一个腔室，从燃料碗的燃料储存器抽出燃料，然后根据需要喷射燃料碗的燃料储存器，并且如所需的那样，通过所述腔室内的位移隔膜喷射到通向加速燃料喷嘴结构的通道 排放到相关化油器或燃料计量装置的进气通道中; 排气通道用于在燃料储存器和室之间连通，以便当隔膜被移动以使燃料喷射到所述通道中时，腔室内的燃料的一部分能够返回到燃料储存器; 恒温阀用于排除燃料储存器和室之间的这种连通，除非在室内的燃料温度（用作发动机的标记和间接的环境温度）达到预定的相对升高的温度之外。

公开(公告)号：US4130609A

公开(公告)日：1978-12-19

申请号：US863883

申请日：1977-12-23

Applicant: Timothy Fiedler

Inventor： Timothy Fiedler

IPC: F02M7/08

CPC classification number: F02M7/08

Abstract: An accelerator pump for providing additional fuel to the carburetor of an internal combustion engine during acceleration permits staged or sequential operation of the pump while employing simplified construction. The structure is arranged so that the accelerating pump is caused to travel during an initial opening of a primary throttle of the carburetor, after which the pump ceases to move until a secondary throttle begins to open, at which time additional pumping action is accomplished.

Abstract translation: 用于在加速期间向内燃机的化油器提供附加燃料的加速器泵允许在采用简化结构的情况下泵的分级或顺序操作。 结构被布置成使得加速泵在化油器的主节气门的初始打开期间被运动，之后泵停止移动直到二次节气门开始打开，此时实现额外的泵送动作。

公开(公告)号：US4105720A

公开(公告)日：1978-08-08

申请号：US828670

申请日：1977-08-29

Applicant: Yukio Hohsho ,  Kimiji Karino ,  Masakichi Momono ,  Yoshishige Oyama ,  Teruo Yamauchi ,  Takao Teranishi

Inventor： Yukio Hohsho ,  Kimiji Karino ,  Masakichi Momono ,  Yoshishige Oyama ,  Teruo Yamauchi ,  Takao Teranishi

IPC: F02M7/08 ,  F02M9/10 ,  F02M9/08

CPC classification number: F02M9/103 ,  F02M7/08 ,  Y10S261/56

Abstract: A variable stage type carburetor having a throttle valve and a movable venturi vane cooperative with the throttle valve. This carburetor further includes a negative pressure responsive device for forcedly shifting the venturi vane in a direction to be closed, irrespective of an opening of the throttle valve, when the negative pressure in the venturi portion is lowered to less than a given value, and an accelerator pump for additionally supplying fuel to an intake passage commensurate to the opening action of the throttle valve. The accelerator pump is effectively operated when the opening of the throttle valve remains at an angle no more than a given degree, while the negative pressure responsive device is effectively operated, when the opening of the throttle valve is at an angle no less than a given degree.

Abstract translation: 具有与节流阀协作的节流阀和可动文丘里叶片的可变级型化油器。 该化油器还包括负压响应装置，当文丘里管部分的负压降低到小于给定值时，不管节流阀的打开如何，都能将文氏管叶片沿着待关闭的方向强制移动， 加速器泵，用于向与节流阀的打开动作相称的进气通路附加地供给燃料。 当节流阀的开度保持不大于给定的角度时，加速器泵被有效地操作，同时当压力响应装置被有效地操作时，当节流阀的开度处于不小于给定的角度时 度。

公开(公告)号：US4076770A

公开(公告)日：1978-02-28

申请号：US782347

申请日：1977-03-29

Applicant: Haruhiko Saito ,  Michio Morishita

Inventor： Haruhiko Saito ,  Michio Morishita

IPC: F02M7/087 ,  F02M7/08

CPC classification number: F02M7/08

Abstract: A carburetor with an auxiliary accelerator-pump system including a diaphragm pump. This diaphragm pump includes a fuel chamber and a vacuum chamber which are separated by a spring-loaded diaphragm. The fuel chamber leads by way of a check valve to a fuel reservoir or float bowl in the carburetor and by way of another check valve to a pump jet or nozzle which is open into the intake passage of the carburetor, while the vacuum chamber leads to a vacuum take-off port open into the intake passage downstream of its throttle valve. This fuel chamber is communicated by way of a valve with the fuel reservoir or float bowl, the aforesaid valve being actuated in response to a vacuum prevailing in the intake passage downstream of the throttle valve.

Abstract translation: 具有辅助加速泵系统的化油器，包括隔膜泵。 该隔膜泵包括由弹簧加载的隔膜分开的燃料室和真空室。 燃料室通过止回阀引导到化油器中的燃料储存器或浮球，并且通过另一止回阀引导到通向化油器进气通道的泵喷嘴或喷嘴，而真空室通向 真空引出口通向其节流阀下游的进气通道。 该燃料室通过具有燃料储存器或浮球的阀连通，上述阀响应于在节流阀下游的进气通道中的真空而被致动。

公开(公告)号：US4018856A

公开(公告)日：1977-04-19

申请号：US612228

申请日：1975-09-10

Applicant: Genjiro Hamakawa ,  Kenji Naito

Inventor： Genjiro Hamakawa ,  Kenji Naito

IPC: F02M11/00 ,  F02B19/10 ,  F02M1/04 ,  F02M7/087 ,  F02M13/04 ,  F02M7/08

CPC classification number: F02M7/087 ,  F02M13/046 ,  Y10S261/74

Abstract: An acceleration pump delivers additional fuel to both the main intake passage and the auxiliary intake passage of an internal combustion engine, to facilitate cold starting. In such an engine, each main combustion chamber is in communication with an auxiliary combustion chamber, respectively. Coordinated means are provided for operating said acceleration pump and throttle valves in said intake passages. Communication between the acceleration pump and the main intake passage remains open at all times, but a passageway connecting the acceleration pump and the auxiliary intake passage is closed except when the ambient temperature is low. Closure of the connecting passageway is effected automatically or in coordination with operation of the choke valve for the main intake passage.

Abstract translation: 加速泵为内燃机的主进气通道和辅助进气通道提供额外的燃料，以方便冷起动。 在这种发动机中，每个主燃烧室分别与辅助燃烧室连通。 设置有用于操作所述进气通道中的所述加速泵和节流阀的协调装置。 加速泵和主进气通道之间的通信始终保持打开，但是除了环境温度低的情况下，连接加速泵和辅助进气通道的通道是关闭的。 连接通道的闭合自动进行或者与用于主进气通道的阻风阀的操作协调进行。

公开(公告)号：US3531094A

公开(公告)日：1970-09-29

申请号：US3531094D

申请日：1969-03-05

Applicant: JOHN ANDREW

Inventor： ANDREW JOHN

IPC: F02M7/06 ,  F02M13/04 ,  F02M7/08

CPC classification number: F02M13/046 ,  F02M7/06