Engine air intake control system
January 4, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and installation for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines Closed loop fast idle control system Apparatus for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines Air-fuel mixture control apparatus for internal combustion engines using digitally controlled valves Air flow control system Engine exhaust gas purification system Patent #: 4147030 InventorsAssigneeApplicationNo. 06/001353 filed on 01/04/1979US Classes:123/339.17, Air conditioner operating mode responsive (i.e., compressor on-off)123/339.22, And temperature responsive123/339.23, Controlling throttle bypass123/587Oxidant controlled by intake manifold vacuumExaminersPrimary: Myhre, Charles J.Assistant: Nelli, Raymond A. Attorney, Agent or FirmInternational ClassesF02D 31/00 (20060101)F02D 41/18 (20060101) F02M 69/32 (20060101) F02M 69/30 (20060101) Foreign Application Priority Data1978-01-19 JPAbstractA system for controlling the amount of air taken in by an engine comprises an air duct tube bypassing a throttle valve of an intake tube for taking in air supplied to an automobile engine, a plurality of valves for regulating the amount of air passing through the air duct tube, and control device therefor. The amount of air in the bypass is controlled in accordance with the temperature and number of revolutions of the engine and the air intake pressure downstream of the throttle valve. During the idling of the engine, the air intake control system generates a signal representing the standard engine idling revolutions in accordance with the engine temperature, compares the actual engine revolutions with a reference, and regulates the amount of air flowing in the bypass by use of the results of a comparison, thus rendering the actual engine revolutions identical to the reference. During the loaded engine operation, by contrast, the amount of bypass air is so controlled that the air intake pressure downstream of the throttle valve is maintained at predetermined constant value. | |
