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Class Information
Number: 123/525
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Combined liquid and gaseous fuel
Description: Subject matter having means by which the charge-forming device may produce a mixture of air, gaseous fuel, and liquid fuel, or may be switched to operate with either gaseous or liquid fuel.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7591253 |
Secondary fuel system for diesel engines |
Sep. 22, 2009 |
| 7559316 |
Indicator for a vehicle having a dual fuel engine |
Jul. 14, 2009 |
| 7546834 |
Selectably fueling with natural gas or direct injection ethanol |
Jun. 16, 2009 |
| 7533634 |
Process for use with dual-fuel systems |
May. 19, 2009 |
| 7523747 |
Method and system for liquid fuel conditioning |
Apr. 28, 2009 |
| 7523739 |
Fuel injection system for internal combustion engine |
Apr. 28, 2009 |
| 7506638 |
Fuel delivery system |
Mar. 24, 2009 |
| 7503315 |
Method for controlling the fuel system for an internal combustion engine |
Mar. 17, 2009 |
| 7487766 |
Flexible fuel engines with exhaust gas recirculation for improved engine efficiency |
Feb. 10, 2009 |
| 7458368 |
Engine fuel efficiency improvements |
Dec. 2, 2008 |
| 7438238 |
Gaseous fuel injector |
Oct. 21, 2008 |
| 7426920 |
Fuel mixer apparatus and method |
Sep. 23, 2008 |
| 7406950 |
Fuel supply apparatus of engine |
Aug. 5, 2008 |
| 7387091 |
Process for use with dual-fuel systems |
Jun. 17, 2008 |
| 7373931 |
Method and apparatus for delivering two fuels to a direct injection internal combustion engine |
May. 20, 2008 |
| 7343895 |
Fuel injection system and method of operation for a gaseous fuelled engine with liquid pilot fuel ignition |
Mar. 18, 2008 |
| 7318426 |
Fuel-control manifold with broad-range temperature and pressure capability |
Jan. 15, 2008 |
| 7302918 |
Method and apparatus for providing for high EGR gaseous-fuelled direct injection internal combustion engine |
Dec. 4, 2007 |
| 7231930 |
Valve assembly cleaning device |
Jun. 19, 2007 |
| 7225763 |
Fumigation system for a diesel engine |
Jun. 5, 2007 |
| 7222613 |
Fuel delivery system |
May. 29, 2007 |
| 7198023 |
Sequential injection lubrication system for a spherical rotary valve internal combustion engine operating on natural gas or alternative fuels |
Apr. 3, 2007 |
| 7174861 |
Method and apparatus for fueling an internal combustion engine |
Feb. 13, 2007 |
| 7150271 |
Vapor assisted cold start control algorithm |
Dec. 19, 2006 |
| 7131430 |
Emissions control system for small internal combustion engines |
Nov. 7, 2006 |
| 7117826 |
Pilot oil ignition gas engine and method of operating pilot oil ignition gas engine |
Oct. 10, 2006 |
| 7100582 |
Propane injection control system and apparatus for vehicles |
Sep. 5, 2006 |
| 7093588 |
Dual fuel engine control |
Aug. 22, 2006 |
| 7093567 |
Internal combustion system and method of operation |
Aug. 22, 2006 |
| 7066155 |
Method and system for the control of fumigation |
Jun. 27, 2006 |
| 7051700 |
Internal combustion engine and control device for the internal combustion engine |
May. 30, 2006 |
| 7045916 |
Electronic fuel selection switch system |
May. 16, 2006 |
| 7044113 |
Systems for delivering liquified gas to an engine |
May. 16, 2006 |
| 7019626 |
Multi-fuel engine conversion system and method |
Mar. 28, 2006 |
| 7011048 |
Method and apparatus for liquid fuel preparation to improve combustion |
Mar. 14, 2006 |
| 7000573 |
Compression ignition engines |
Feb. 21, 2006 |
| 6990956 |
Internal combustion engine |
Jan. 31, 2006 |
| 6988492 |
Hydrogen and liquid fuel injection system |
Jan. 24, 2006 |
| 6981472 |
Homogeneous charge compression ignition control utilizing plasmatron fuel converter technology |
Jan. 3, 2006 |
| 6955156 |
Injection pump and fuel DME feed device of diesel engine with the injection pump |
Oct. 18, 2005 |
| 6951210 |
Feed and control system for an internal combustion engine fed with two different fuels |
Oct. 4, 2005 |
| 6947831 |
Pressure sensor diagnosis via a computer |
Sep. 20, 2005 |
| 6901889 |
Fumigation system for a diesel engine |
Jun. 7, 2005 |
| 6883501 |
Throttle and fuel injector assembly |
Apr. 26, 2005 |
| 6868837 |
Cold start fuel vapor enrichment |
Mar. 22, 2005 |
| 6845616 |
Internal combustion engine which can be operated with a choice of different fuels, especially for a motor vehicle drive system |
Jan. 25, 2005 |
| 6843236 |
Multi-phase fuel system |
Jan. 18, 2005 |
| 6830026 |
Diagnostics system for tracing leaks from a gas-supply system and for checking operation of the valves forming part of said system |
Dec. 14, 2004 |
| 6805107 |
Dual fuel source carburetor method |
Oct. 19, 2004 |
| 6758194 |
Parallel vaporized fuel system |
Jul. 6, 2004 |
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