Starting device and carburetor supplying fixed amount of fuel
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-001/16
F02M-017/04
F02M-037/16
출원번호
US-0887796
(2015-10-20)
등록번호
US-10227953
(2019-03-12)
우선권정보
JP-2010-198165 (2010-09-03)
발명자
/ 주소
Watanabe, Hideki
Saito, Tamotsu
출원인 / 주소
ZAMA JAPAN KABUSHIKI KAISHA
대리인 / 주소
One LLP
인용정보
피인용 횟수 :
0인용 특허 :
24
초록▼
A starting device for feeding a quantity of fuel from the fixed-quantity fuel chamber to an intake passage during start-up having a manually operated primary pump for suctioning/pumping fuel and arranged on a fuel introduction path connected along a fuel-feeding path; and a fixed-quantity fuel chamb
A starting device for feeding a quantity of fuel from the fixed-quantity fuel chamber to an intake passage during start-up having a manually operated primary pump for suctioning/pumping fuel and arranged on a fuel introduction path connected along a fuel-feeding path; and a fixed-quantity fuel chamber for temporarily storing fuel delivered from the primary pump. An internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing its internal capacity to expand/shrink within a predetermined range; the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage side and has a manually operated open/close valve; the valve is opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of fuel while enlarging its internal capacity, whereby it shrinks due to an elastic contraction force and the fuel.
대표청구항▼
1. A carburetor and starting device, comprising an intake passage,a metering chamber,a manually operated primary pump for suctioning and pumping fuel, the primary pump being arranged on a fuel introduction path in communication on an introduction side with the metering chamber; anda fixed-quantity f
1. A carburetor and starting device, comprising an intake passage,a metering chamber,a manually operated primary pump for suctioning and pumping fuel, the primary pump being arranged on a fuel introduction path in communication on an introduction side with the metering chamber; anda fixed-quantity fuel chamber for temporarily storing fuel that has been drawn from the metering chamber and delivered from the primary pump; wherein the starting device feeds a fixed quantity of starting fuel from the fixed-quantity fuel chamber to the intake passage during engine start-up;wherein at least a part of an internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing the internal capacity of the fixed-quantity fuel chamber to expand and contract within a predetermined range;the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage, the fuel delivery path having a manually operated open/close valve provided partway therealong and biased to a closed position;the open/close valve of the fuel delivery path is manually opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of starting fuel while the internal capacity of the fixed-quantity fuel chamber is enlarged,whereby the fixed-quantity fuel chamber contracts due to an elastic contraction force and discharges a given quantity of starting fuel to the intake passage via the fuel delivery path;wherein the fixed-quantity fuel chamber is equipped with a locking means, for locking the internal wall that has undergone displacement to an extent at which the internal capacity has expanded to a predetermined level, the internal wall being locked at the associated position, and for automatically stopping operation of the interior wall in the direction of contraction; wherein, in association with the open/close valve being opened, a state of locking applied by the locking means is canceled, the fixed-quantity fuel chamber is caused to contract, and the starting fuel is discharged;wherein the at least a part of the internal wall of the fixed-quantity fuel chamber that undergoes elastic displacement is a diaphragm; andwherein the locking means includes a stopper operably couplable to the open/close valve on a first end and a guide rod coupled on a first end to the diaphragm and engageable on a second end with the stopper to lock the diaphragm at a predetermined position and prevent the diaphragm from moving in the direction of contraction. 2. The carburetor and starting device according to claim 1, further comprising a fuel-ejecting path for ejecting excess fuel extends from the fixed-quantity fuel chamber and has a constricted section, which is narrower than a narrowest portion of the fuel delivery path; wherein excess fuel charged into the fixed-quantity fuel chamber by excessive operation of the primary pump is ejected. 3. The carburetor and starting device according to claim 1, further comprising a valve spring biasing the open/close valve to a closed position. 4. The carburetor and starting device according to claim 1 further comprising a starter bar operably coupled on a first end to a second end of the stopper and operable from a second end exterior to the carburetor and starting device to manually open the open/close valve and cancel the state of locking applied by the locking means. 5. The carburetor and starting device according to claim 4 further comprising a coil spring biasing the starter bar and stopper toward a state of locking. 6. A carburetor and starting device, comprising an intake passage,a metering chamber,a manually operated primary pump for suctioning and pumping fuel, the primary pump being arranged on a fuel introduction path in communication on an introduction side with the metering chamber;a fixed-quantity fuel chamber for temporarily storing fuel that has been drawn from the metering chamber and delivered from the primary pump; wherein the starting device feeds a fixed quantity of starting fuel from the fixed-quantity fuel chamber to the intake passage during engine start-up; wherein at least a part of an internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing the internal capacity of the fixed-quantity fuel chamber to expand and contract within a predetermined range; wherein the at least a part of the internal wall of the fixed-quantity fuel chamber that undergoes elastic displacement is a diaphragm; anda diaphragm spring urging the diaphragm in the direction of contraction;the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage, the fuel delivery path having a manually operated open/close valve provided partway therealong and biased to a closed position;the open/close valve of the fuel delivery path is manually opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of starting fuel while the internal capacity of the fixed-quantity fuel chamber is enlarged,whereby the fixed-quantity fuel chamber contracts due to an elastic contraction force and discharges a given quantity of starting fuel to the intake passage via the fuel delivery path; andwherein the fixed-quantity fuel chamber is equipped with a locking means, for locking the internal wall that has undergone displacement to an extent at which the internal capacity has expanded to a predetermined level, the internal wall being locked at the associated position, and for automatically stopping operation of the interior wall in the direction of contraction; wherein, in association with the open/close valve being opened, a state of locking applied by the locking means is canceled, the fixed-quantity fuel chamber is caused to contract, and the starting fuel is discharged. 7. A carburetor comprising an intake passage,a metering chamber,a fixed-quantity fuel chamber comprising a diaphragm that undergoes elastic displacement, allowing the internal capacity of the fixed-quantity fuel chamber to expand and contract within a predetermined range;a manually operated primary pump, the primary pump being arranged on a fuel introduction path in communication on an introduction side with the metering chamber and on a discharge side with the fixed-quantity fuel chamber;a fuel delivery path that communicates with the intake passage the fixed-quantity fuel chamber, the fuel delivery path having a manually operated open/close valve biased to a closed position;a valve spring biasing the open/close valve to a closed position;a starter bar operably coupled on a first end to the open/close valve and operable from a second end exterior to the carburetor and starting device to manually open the open/close valve;a stopper operably couplable to the open/close valve on a first end and on a second end to the first end of the starter bar; anda guide rod coupled on a first end to the diaphragm and engageable on a second end with the stopper to lock the diaphragm at a predetermined position and prevent the diaphragm from moving in the direction of contraction;wherein upon manually opening of the open/close valve of the fuel delivery path at a state in which the fixed-quantity fuel chamber is enlarged and filled with a predetermined quantity of starting fuel the diaphragm contracts due to an elastic contraction force and discharges a given quantity of starting fuel to the intake passage via the fuel delivery path. 8. The carburetor according to claim 7, further comprising a fuel-ejecting path extending from the fixed-quantity fuel chamber for ejecting excess fuel. 9. The carburetor according to claim 7 further comprising a coil spring biasing the starter bar and stopper toward a state of locking. 10. The carburetor according to claim 7 further comprising a diaphragm spring urging the diaphragm in the direction of contraction.
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이 특허에 인용된 특허 (24)
Iwasa,Yoshiharu; Toda,Mamoru, Accelerator apparatus for diaphragm carburetor.
Guntly Thomas G. (Hartford WI) Rasmussen Jerome L. (Germantown WI) Anderson Richard T. (Menomonee Falls WI), Floatless carburetor with integral primer system.
Jungquist Bruce E. (Aurora OH) McBroom Michael E. (Rochester NY) Yaeger Curtis G. (Prior Lake MN) Knauff Donald G. (Lakeville MN) Sem Thomas R. (Plymouth MN), Method and apparatus for distributing fuel in a diesel engine.
Tuggle Lloyd H. ; Collins Imack L. ; Sadler Jeffrey G. ; Ferlito Michael J., Method and apparatus for fast start fuel system for an internal combustion engine.
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