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US 4,907,547 AGranted
One-piece wave deflector for I.C. engine intake system
AssigneeSiemens-Bendix Automotive Electronics L.P.
InventorPaul D. Daly
Life of this patent
Estimating the term…
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AssigneeSiemens-Bendix Automotive Electronics L.P.
InventorPaul D. Daly
Estimating the term…
An internal combustion engine has two differently tuned sets of runners leading to the cylinders. A wave deflector element transversely spans a particular runner for one cylinder and the corresponding particular runner for an adjacent cylinder, and there is one wave deflector element for each pair of cylinders. The wave deflector elements are selectively operated in unison by an actuator to either open or close the runners of the set with which they are associated depending upon the operating state of the engine. The actuator is controlled by an electronic control unit. Each wave deflector element comprises a shaft and a pair of wave deflectors integrally formed of plastic so as to be of one-piece construction. The wave deflector element is resiliently flexible by bending for installation in the runners that it controls.
In an internal combustion engine comprising a pair of cylinders within which combustion takes place, an intake valve for each cylinder, a pair of runners for each cylinder through which air is conducted to the intake valve of the cylinder, a main air throttle mechanism disposed upstream of the runners for throttling the induction airflow into the cylinders, and a wave deflector mechanism disposed in a particular runner for one cylinder of said pair of cylinders and in a particular runner for the other cylinder of said pair of cylinders, said wave deflector mechanism being disposed just upstream of the intake valves of the two cylinders, said wave deflector mechanism comprising a rotary shaft that transversely spans both the particular runner for said one cylinder and the particular runner for the other cylinder and wave deflectors on and rotatable with said shaft for selectively opening and closing the particular runner for said one cylinder and the particular runner for said other cylinder, the improvement characterized in that said wave deflectors and said shaft are integrally formed as a single part.
A wave deflector element for use in an internal combustion engine just upstream of the engine's intake valve mechanism for selectively opening and closing runners through which throttled air is inducted into the engine's combustion chamber space, said wave deflector element comprising a shaft and at least two wave deflectors on said shaft, said wave deflectors and said shaft being integrally formed as a single plastic part.
In an internal combustion engine comprising a pair of cylinders within which combustion takes place, an intake valve for each cylinder, a pair of runners for each cylinder through which air is conducted to the intake valve of the cylinder, a main air throttle mechanism disposed upstream of the runners for throttling the induction airflow into the cylinders, and a wave deflector mechanism disposed in a particular runner for one cylinder of said pair of cylinders and in a particular runner for the other cylinder of said pair of cylinders, said wave deflector mechanism being disposed just upstream of the intake valves of the two cylinders, said wave deflector mechanism comprising a rotary shaft that transversely spans both the particular runner for said one cylinder and the particular runner for the other cylinder and wave deflectors on and rotatable with said shaft for selectively opening and closing the particular runner for said one cylinder and the particular runner for said other cylinder, the method of assembling the wave deflector mechanism to the runners which comprises making said shaft to be nominally straight but resiliently bendable, providing a pair of aligned holes in opposite wall portions of said runners, the distance between said holes being less than the length of said shaft, fitting one end of said shaft into one of said holes while the shaft is resiliently bent, fitting the opposite end of said shaft into the other of said holes while the shaft is resiliently bent, and then allowing the shaft to return to its nominally straight condition.
In an internal combustion engine comprising a cylinder within which combustion takes place, an intake valve for said cylinder, a pair of runners for said cylinder through which air is conducted to said cylinder, a main air throttle mechanism disposed upstream of the runners for throttling the induction airflow into the cylinder, and a wave deflector mechanism disposed in a particular runner for said cylinder, said wave deflector mechanism being disposed just upstream of the intake valve, said wave deflector mechanism comprising a rotary shaft that spans said particular runner, and a wave deflector on and rotatable with said shaft for selectively opening and closing said particular runner, the improvement characterized in that said wave deflector and said shaft are integrally formed as a single part.
Dependencies are inferred from the claim text.