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Class Information
Number: 123/438
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Auxiliary control of carburetor fuel metering > By electrical or electronic control system
Description: Subject matter wherein the auxiliary control means utilizes some form of electrical or electronic circuitry in its sensing or controlling action.










Sub-classes under this class:

Class Number Class Name Patents
123/439 Variable venturi carburetor 44


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8622031 System for supplementary fuel supply Jan. 7, 2014
8394165 Arrangement of an air filter and a diaphragm carburettor Mar. 12, 2013
8335629 Method for controlling a fuel valve and/or an air valve for an internal combustion engine Dec. 18, 2012
8215286 Electronic control system for carburetor Jul. 10, 2012
8204672 Apparatus and method for detecting operational issues based on single input single output system dynamics Jun. 19, 2012
7882822 Method for driving an electromagnetic actuator in a diaphragm carburettor for control of air/fuel ratio Feb. 8, 2011
7827965 Techniques for delivering fuel to a piston aircraft engine Nov. 9, 2010
7778765 Fuel injection control apparatus for internal combustion engine Aug. 17, 2010
7613526 Control system for a reciprocating object Nov. 3, 2009
7603983 Carburetor and method of operating the same Oct. 20, 2009
7509941 Apparatus and method for adjusting air-to-fuel ratio for small gasoline engine Mar. 31, 2009
7341044 Method and control device for regulating the air-fuel mixture provided to an engine Mar. 11, 2008
7207318 Method for operation of a device for energy conversion using a main fuel and at least one auxiliary fuel Apr. 24, 2007
7204232 Carburetor electrically-operated automatic choke system Apr. 17, 2007
7171947 Electrically-actuated throttle device for general-purpose engine Feb. 6, 2007
7143999 Accelerating apparatus of carburetor Dec. 5, 2006
7140352 Method for controlling an electromagnetic valve in a fuel system Nov. 28, 2006
7040287 Fuel dosage device May. 9, 2006
7021289 Reducing engine emissions on an engine with electromechanical valves Apr. 4, 2006
6932058 Carburetor arrangement for an internal combustion engine Aug. 23, 2005
6910460 Engine air-fuel ration control method with venturi type fuel supply device and fuel control appliance including the method Jun. 28, 2005
6886531 Control apparatus for an internal combustion engine May. 3, 2005
6702261 Electronic control diaphragm carburetor Mar. 9, 2004
6701897 Engine fuel delivery management system Mar. 9, 2004
6698727 Electronic control diaphragm carburetor Mar. 2, 2004
6615798 Internal combustion engine having multiple intake valves, one valve adapted for higher speed Sep. 9, 2003
6581916 Electronic control diaphragm carburetor Jun. 24, 2003
6484695 Engine having compressed air assisted injection with secondary high speed fuel carburetor sandwich Nov. 26, 2002
6426631 Oxygen sensor device incorporating a heater therein Jul. 30, 2002
6401685 Carburetor with a fuel shut off solenoid Jun. 11, 2002
6273065 Electronically controlled carburetor Aug. 14, 2001
6076503 Electronically controlled carburetor Jun. 20, 2000
5921208 Thermodynamical aspiration valve Jul. 13, 1999
5809970 Backup control for natural gas fueled internal combustion engine Sep. 22, 1998
5809971 Engine air/fuel ratio control Sep. 22, 1998
5794593 Electronically controlled type floatless carburetor Aug. 18, 1998
5775300 Electronically controlled type floatless carburetor Jul. 7, 1998
5722372 Fuel supply system with carburetor air bleed control Mar. 3, 1998
5718204 Electronically controlled type floatless carburetor Feb. 17, 1998
5715789 Method for controlling engine for model and device therefor Feb. 10, 1998
5709193 Engine air/fuel ratio control Jan. 20, 1998
5632248 Electronically controlled type floatless carburetor May. 27, 1997
5611312 Carburetor and method and apparatus for controlling air/fuel ratio of same Mar. 18, 1997
5537979 Mixture preparation device for double-feed engines Jul. 23, 1996
5465698 Membrane carburetor Nov. 14, 1995
5443046 Efficiently pumped fuel supply system Aug. 22, 1995
5389224 Capacitive A/F sensor Feb. 14, 1995
5379739 Carburetor Jan. 10, 1995
5355855 Integrated feed forward air/fuel ratio sensor for gaseous fuel engines Oct. 18, 1994
5353765 Fuel management system for a gaseous fuel internal combustion engine Oct. 11, 1994

1 2 3 4 5










 
 
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