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AssigneeBrunswick Corporation
InventorsMatthew W. Jaeger, John E. Lingenfeleter, Steven M. Lippincott, Jerry M. Stoll, Jr., Brian R. White
Estimating the term…
A dual bore throttle body assembly for a marine engine. The assembly includes a body having a pair of side-by-side bores, each of which is adapted to be enclosed by a flat throttle valve. A separate shaft is connected to each throttle valve and a throttle cable is connected to the shafts through a progressive linkage. The linkage is constructed such that only one of the valves is initially opened, and when that valve is approximately 50 percent open, the second valve is then opened. The speed of opening of the second valve is greater than that of the first valve so that both valves will reach the full opened position at the same instant. Each shaft is provided with a longitudinal slot which receives the respective throttle valve, and the valves are secured within the slots by mechanical fasteners such as screws.
A throttle body assembly, comprising a body having a pair of side-by-side bores, a throttle valve disposed in each bore and movable between a closed position and an open position, a separate shaft connected to each throttle valve, operating means operably connected to said shafts to rotate the shafts and move the valves between the closed and open positions, and linkage means interconnecting said operating means and said shafts, said linkage means being constructed and arranged to move a first of said valves from the closed position toward the open position before the second of said valves is moved from the closed position to the open position, said linkage means including a first link connected to said first shaft at a first connection, said operating means being pivotally connected to said first link at a second connection, a second link pivotally connected to the first link at a third connection, a third link connected to said second shaft at a fourth connection, said second link being connected to said third link at a fifth lost motion connection, said lost motion connection being constructed and arranged such that pivotal movement of said third link is delayed after initial pivotal movement of said first link.
A dual bore throttle body assembly, comprising a body having a first atmospheric side exposed to the atmosphere and a second side exposed to an engine, said body having a pair of side-by-side bores extending between said atmospheric side and said second side, a throttle valve disposed in each bore and being movable between a closed position and an open position, a separate shaft connected to each throttle valve, operating means operably connected to said shafts to rotate said shafts and thereby move said valves between the closed and open positions, passage means extending from the atmospheric side to the engine side of said body, said body including a port communicating with said passage means, conduit means connecting the port with a fuel pump, and idle air control means including a valve member for controlling flow of air through said passage means to the engine when said throttle valves are in the closed position.
A throttle body assembly, comprising a body having a first atmospheric side exposed to the atmosphere and a second side exposed to an engine, said body having a bore extending between said atmospheric side and said second side, a throttle valve disposed in said bore and movable between a closed position and an open position, a shaft connected to said throttle valve, operating means operably connected to said shaft to rotate said shaft and thereby move said valve between a closed and an open position, passage means in said body, a first end of said passage means communicating with said atmospheric side and a second end of said passage means communicating with said second side, said body having a valve seat bordering said passage means, idle air control means including a valve member disposed to engage said valve seat for controlling flow of air through said passage means to the engine when the throttle valve is in the closed position, said body including a port communicating with said passage means at a location between the first end of said passage means and said valve seat, and conduit means connecting the port with a fuel pump.
Dependencies are inferred from the claim text.