U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6260903

Portable automobile partition

A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 123/437 - Auxiliary control of carburetor fuel metering


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter in which the charge-forming device is a carburetor
No. of patents: 77
Last issue date: 10/04/2011


1    
NumberTitleIssue Date
8028679Engine control system having pressure-based timing
A control system for an engine having a first cylinder and a second cylinder is disclosed having a first engine valve movable to regulate a fluid flow of the first cylinder and a first actuator associated with the first engine valve. The control system also has a se...
10/04/2011
7584745Carburetor electronic fuel injection plenum
A injection conversion body with internal injector compartment for converting a normally carbureted internal combustion engine to a fuel injected engine while concealing the fuel delivery system. The original engine carburetor is removed. The plenum assembly is mate...
09/08/2009
7353804Method and arrangement for achieving an adjusted engine setting utilizing engine output and/or fuel consumption
A method and associated arrangement for achieving an adjusted engine setting utilizing engine output and/or fuel consumption. An engine that consumes fuel is run. Fuel consumption and/or engine operation output is determined. A value is determined utilizing the dete...
04/08/2008
7317984Engine shut-down for engine having adjustable valve timing
A method for operating at least an intake and exhaust valve in a cylinder with a piston of an engine in a vehicle, comprising during conditions of an engine shut-down, maintaining at least one of the intake and exhaust valves in a closed position, and during conditi...
01/08/2008
7267326Automatic priming system
An automatic priming system for internal combustion engines, which is operable to prime the carburetor of the engine at engine cranking speeds, and is automatically disabled after the engine starts. The automatic priming system is driven by pressure fluctuations wit...
09/11/2007
7264230Carburetor and solenoid assemblies and methods of assembling the same
An engine carburetor and a solenoid valve assembly therefor and methods of assembling the same. The carburetor has a body with a fuel and air mixing passage communicating with an air bleed passage. A cavity extends into the body for communication with the air bleed ...
09/04/2007
7251557Method for auto-ignition operation and computer readable storage device for use with an internal combustion engine
An internal combustion engine that can be operated in compression ignition mode, comprising a fuel injector (2) for each cylinder; a fuel injection control unit (4) for controlling fuel injection quantity and a piston (5) in each cylinder whose ...
07/31/2007
7228843Internal combustion engine having a carburetor and a starting device
A two-stroke engine has an intake channel via which the engine (1) is supplied with an air/fuel mixture prepared in a carburetor (12). The engine also has a starting device (19, 40) for enrichment of the air/fuel mixture during the start operati...
06/12/2007
7216856Accelerator apparatus for diaphragm carburetor
The accelerator apparatus prevents air from remaining within a pump chamber and discharged fuel vapor from causing a pumping effect so as to a destabilize engine operation and increase of an exhaust gas content of harmful material, in an accelerator apparatus in whi...
05/15/2007
7210672Accelerator apparatus for diaphragm carburetors
An accelerated fuel passage of an accelerator pump operatively connected with a throttle shaft having a throttle valve. The accelerated fuel passage is connected to an upstream side of a needle orifice, which orifice is coupled to a main nozzle. Consequently, the fu...
05/01/2007
7165536Evaporative emissions control system for small internal combustion engines
An evaporative emissions control system for small internal combustion engines. The system generally includes a charcoal canister and a carburetor with a fuel circuit shutoff valve. The charcoal canister is in fluid communication with the air space above the liquid f...
01/23/2007
7152852Priming system for a float bowl carburetor
A float bowl type carburetor has a fuel and air mixing passage extending therethrough, a float bowl assembly, a priming pump communicated with the float bowl assembly and a fuel supply pipe that is communicates fuel in the float bowl assembly with the fuel and air m...
12/26/2006
7144000Automatic choke for an engine
An internal combustion engine including a carburetor. The internal combustion engine includes a choke valve disposed within the carburetor, and a choke lever interconnected with the choke valve for movement with the choke valve. The engine also includes a throttle v...
12/05/2006
7021289Reducing engine emissions on an engine with electromechanical valves
A system and method to control engine valve timing to improve the start of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions during the start of an internal combustion engine. ...
04/04/2006
7011075Engine shut-down for engine having adjustable valve timing
A method for discontinuing combustion in a cylinder of an internal combustion engine having an intake manifold and an emission control device coupled downstream of thereof, where the cylinder has at least one valve, the method comprising during a shut-down, holding ...
03/14/2006
6990969Automatic choke for an engine
An automatic choke apparatus for use in an internal combustion engine. The choke apparatus includes a choke valve automatically operable in response to the speed of the engine, a thermally conductive assembly that conducts heat from exhaust gases produced by the eng...
01/31/2006
6938381Catastrophic event survival structure and method of manufacture
A catastrophic event survival structure and method of manufacture such that the catastrophic event survival structure includes a monolithic outer shell formed from a single pour of concrete and enclosing a confined inner space therein. The monolithic outer shell of ...
09/06/2005
6931839Apparatus and method for reduced cold start emissions
An exhaust system for an internal combustion engine having a plurality of cylinders, comprising: a exhaust manifold for providing fluid communication of exhaust of the plurality of cylinders to a catalytic converter, the exhaust manifold comprising a first exhaust p...
08/23/2005
6915772Automatic priming system
An automatic priming system for internal combustion engines, which is operable at engine cranking speeds and which is automatically disabled at engine running speeds. The automatic priming system is driven by pressure fluctuations within the engine crankcase which a...
07/12/2005
6786208Boost fuel enricher
The boost fuel enricher is used with internal combustion engines, either carbureted or fuel-injected, that are equipped with compressors, i.e., turbocharged or supercharged, in order to enrich the air/fuel ratio when the engine is under boost. The boost fuel enriche...
09/07/2004
6516779Throttle adjusting apparatus for working machine
A throttle adjusting apparatus for use with a machinery for soil management includes a throttle cable. The throttle cable has one end portion to which a throttle valve, a choke valve, and a fuel cock are connected. The apparatus further includes a throttl...
02/11/2003
6295953Portable power working machine
A portable power working machine includes a small air-cooled internal combustion engine, a cooling fan, and a carburetor chamber housing therein an air cleaner. A dust-separating air duct is interposed between a region close to the cooling fan and the car...
10/02/2001
6267102Carburetor with displaced idle flow
A single needle diaphragm type carburetor has a throttle valve in a mixing passage with a venturi, an idle fuel nozzle downstream of the throttle valve when in its idle position, a high speed fuel nozzle preferably disposed within the venturi upstream of ...
07/31/2001
6186117Electronic compensation system
The air/fuel mixture ratio supplied to an internal combustion engine of a vehicle is modified to achieve a constant mass flow rate in spite of changes in atmospheric temperature and pressure conditions by employing an electronic compensation system. The s...
02/13/2001
5740781Starting system for an internal combustion engine
A starting system for an internal combustion engine is provided for enhancing engine startability and performance by simultaneously controlling the volume of air flowing through a carburetor and the ratio of an air/fuel mixture through a single manual ope...
04/21/1998
5724945Carburetor air/fuel ratio control for single cylinder engines
An apparatus for controlling air/fuel ratio in a carburetted single cylinder internal combustion engine, including an apparatus for preventing fuel from being drawn into a carburetor, and, in turn, toward the cylinder inlet, as a result of air flow oscill...
03/10/1998
5462024Auxiliary carburetion device in direct fuel injection engines
An auxiliary carburetion device in direct fuel injection engines, to be positioned in correspondence with a main duct (12) feeding air to the engine crankcase (10), a throttling member (38) being located in the main duct (12). The device includes a block ...
10/31/1995
5263454Engine for portable working machine
An engine for a portable working machine includes a carburetor having a fuel supply device which is to be operated by an intake pipe of a cylinder head provided with an intake valve and an exhaust valve, and a pulse pickup passage which is in fluid commun...
11/23/1993
4971004Deceleration enrichener system
In an internal combustion engine having a fuel/air delivery system such as a carburetor (12) supplying a fuel/air mixture for combustion by the engine, a deceleration enrichener system includes a valve (10) operated by engine manifold vacuum (14) and enri...
11/20/1990
4957072Balanced radial engine
A low cost multi cylinder radial aircraft engine is composed of an even number of individually functional, single cylinder slider crank model engines. They are mounted to a plate to form equally spaced radially oriented cylinders. In the preferred embodim...
09/18/1990
4936267Carburetor for an internal combustion engine
The invention relates to a carburetor for an internal combustion engine and especially for a portable small engine. The carburetor includes a carburetor housing defining an intake pipe and a control chamber which communicates with the intake pipe via inta...
06/26/1990
4879975Alcohol fuel operation conversion means for internal combustion engines
A modified carburetion and manifold arrangement to enable internal combustion engines to efficiently use fuels such as alcohols having high latent heat of vaporization. A variable venturi carburetion means (30) is combined with two manifolds-one (20) bein...
11/14/1989
4757792Internal combustion engine
An internal combustion engine comprising a crankcase adapted to rotatably support a crankshaft having an axis, the crankcase defining a plurality of crankcase chambers and including a generally flat manifold mounting surface including therein a first seri...
07/19/1988
4658798Turbocharger control system
A turbocharger control system utilized in a carburetor system including a carburetor having an air-fuel induction passage, a fuel supply passage supplying fuel to the air-fuel induction passage, and a turbocharger having a compressor impeller compressing ...
04/21/1987
4563990Fuel supply control system for engine carburetors
A fuel supply control system for a vehicle engine carburetor and particularly a carburetor that includes a variable venturi portion and fixed venturi or nozzle portion. The system includes a fuel valve for supplying additional fuel to the nozzle under low...
01/14/1986
4558680System for controlling the air-fuel ratio supplied to a supercharged engine
A system for controlling the air-fuel ratio for an engine comprises a first passage for communicating a portion adjacent to an inlet of an air bleed of a carburetor of the engine with a portion of the intake passage between an air-cleaner and a supercharg...
12/17/1985
4556032Adapter means for creating an open loop manually adjustable apparatus and system for selectively controlling the air-fuel ratio supplied to a combustion engine
A vehicle has a combustion engine, ground-engaging drive wheels, a power transmission for conveying power from the engine to the wheels, an induction passage for supplying motive fluid to the engine, a source of fuel, adaptive structure defining a fuel me...
12/03/1985
4556031System for controlling a carburetor of an internal combustion engine
A system for controlling a carburetor of an engine provided with a supercharger. A passage is provided for communicating a float chamber of the carburetor with an intake passage through a changeover valve. A vent pipe is provided for communicating the flo...
12/03/1985
4541384System for controlling the air-fuel ratio supplied to an engine
A system for controlling the air-fuel ratio for an engine comprises a valve provided in an inlet of an air bleed of a carburetor of the engine. An actuator comprises a diaphragm operatively connected to the valve and first and second chambers defined by t...
09/17/1985
4498440Mixture control apparatus for carburetor
A mixture control apparatus for a carburetor which precludes otherwise possible occurrence of fluctuation in the opening angle of the throttle valve even when the engine operation happens to fall near the boundary between the cold state and the hot state....
02/12/1985
1    
 
Sign InRegister
Username  
Password   
forgot password?