Internal-combustion engines – Engine speed regulator – Having plural throttle valve structure
Patent
1995-11-22
1997-08-19
Dolinar, Andrew M.
Internal-combustion engines
Engine speed regulator
Having plural throttle valve structure
F02D 910
Patent
active
056577311
ABSTRACT:
The invention provides a device for adjusting an intake in accordance with the loading condition in overall speed range including: a plurality of small valves for opening or shutting the intake duct, a plurality of large valves for opening or shutting the intake duct in which the small valves are formed, i.e. each of small valve is inscribed with the corresponding large valve, a first driving means for operating the small valves and a second driving means for operating the large valves, all which can turn in a positive and a negative directions, wherein the small valves are integrally mounted on a shaft of the first driving means and large valve means are unitarily mounted on a shaft of the second driving means, the shaft of the second driving means is a hollow shaft and the shaft of the first driving means is fitted to the hollow shaft through a hollow portion thereof, each shaft rotates independently, and an electronic control unit (ECU) for controlling the driving means according to a load condition in an over-all speed range.
REFERENCES:
patent: 4408581 (1983-10-01), Pfalzgraf et al.
patent: 4688533 (1987-08-01), Otobe
patent: 4827884 (1989-05-01), Cook
patent: 4892071 (1990-01-01), Asayama
Dolinar Andrew M.
Hyundai Motor Company
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