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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5809971 |
Engine air/fuel ratio control |
Sep. 22, 1998 |
| 5809970 |
Backup control for natural gas fueled internal combustion engine |
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 |
| 5345912 |
Method and device for controlling a carburetor |
Sep. 13, 1994 |
| 5310474 |
Workfunction based A/F sensor |
May. 10, 1994 |
| 5226920 |
Method and arrangement for adjusting air/fuel ratio of an i. c. engine |
Jul. 13, 1993 |
| 5150673 |
Fuel supplying device for marine propulsion engine |
Sep. 29, 1992 |
| 5060617 |
Fuel supply system for selectively increasing the fuel supply to an engine |
Oct. 29, 1991 |
| 5031593 |
System for controlling the carburetor of an internal combustion engine |
Jul. 16, 1991 |
| 4998521 |
Ignition timing control for outboard motor |
Mar. 12, 1991 |
| 4955342 |
Idle revolution number control apparatus for carbureter |
Sep. 11, 1990 |
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