1. Ignition of extremely lean fuel/air mixture in combustion engines

2. Suprastoichiometric combustion, i.e. using a fuel-lean mixture to dilute combustion heat;

3. A first fuel charge is injected into the combustion chamber to form a lean air-fuel mixture.

4. Lean-burn gasoline engines can further reduce fuel consumption by reducing the fuel mixture under conditions of low load.

5. The servo (2) is also supplied with a "go lean" fixed signal (3) tending to lean out the air/fuel mixture.

6. On the other hand, the fuel consumption of the quasi-homogenous mixture lean combustion decreased by about 5% compared with homogenous lean mixture combustion during all the A/F.

7. In one embodiment, the engine has direct in-cylinder fuel injection, is adapted for lean air-fuel mixture operation, and includes an oxidation catalyst and a lean NOx adsorber.

8. Method for carrying out an ionic current measurement in a combustion engine using a lean fuel mixture

9. A rich fuel air mixture is catalytically oxidized with the resulting reacted mixture (48) being made lean by having additional air (46) added thereto.

10. The air/fuel ratio of an air/fuel mixture is oscillated, relative to a target air/fuel ratio, in a preset amplitude lean or rich of the stoichiometric air/fuel ratio.

11. Piloted airblast lean direct fuel injector

12. The combustion chamber (210) is configured to receive a lean air/fuel mixture therein to substantially fill the combustion chamber (210).

13. This anomaly created an abnormally lean fuel/air mixture in the #2 carburetor and accounted for the engine's loss of power.

14. The burning gases can ignite the lean mixture.

15. Generation of fuel-lean and fuel-rich conditions in the combustion zone.

16. Under idling operation of the engine, an air/fuel mixture is induced into the rich and lean passages not only through one of the fuel supply orifices (61) but also through the idle fuel supply orifice (8).

17. Lean combustion technologies exploit a lean (low) fuel-to-air ratio, enabling significant reductions in emissions.

18. A Choke gets the engine firing right, with the right air/fuel mixture and lets it warm up without being too rich or too lean.

19. Lean burn engines employ a higher air-to-fuel ratio, resulting in considerably improved fuel economy.

20. A fuel supply provides at least one of fuel or air/fuel mixture to the gap.

21. The Achates OPGCI injects fuel early in the compression cycle for a lean mixture, with incoming air and residual exhaust that is purposefully left in the cylinder

22. The invention relates to a device used in controlled-ignition and high-pressure direct injection engines, that enables the combustion start of an extremely lean fuel/air mixture.

23. A premixing injector for use in gas turbine engines assists in the lean premixed injection of a gaseous fuel/air mixture into the combustor of a gas turbine.

24. Method for controlling a rich/lean combustion mixture in a defined manner

25. The target air/fuel ratio is alternately switched between a set rich air/fuel ratio and a set lean air/fuel ratio.

26. The invention relates to a method for operating a spark-ignition internal combustion engine (10) with direct fuel injection with high residual gas rates or very lean charge mixture.

27. The proposal is for a process and device for controlling an internal combustion engine in which a lean fuel-air mixture is supplied in at least a first operating range.

28. This also ensures that the system alternates rapidly between very slighty fuel-lean and very slightly fuel-rich conditions.

29. A control unit (18) is provided for switching between the rich fuel use or lean fuel use operational modes.

30. Employing a higher air-to-fuel ratio, lean-burn engines result in considerably improved fuel economy and fewer greenhouse gases.

31. Internal combustion engines burn a mixture of fuel and air.

32. The fuel inlet system (12) further comprises means (20) for adding water to the air/fuel mixture.

33. Any engine exhaust excess air due to fuel-lean combustion is considered dilution air.

34. Above 10%, the air/fuel mixture is too rich to ignite.

35. Fuel and air mixture regulators being parts of internal combustion engines

36. Substoichiometric combustion, i.e. in a fuel rich mixture so that the remaining fuel may act as reducing agent;

37. Below the LEL or LFL, the air/contaminant mixture is theoretically too "lean" to burn.

38. A spark plug (10) which is also suited for igniting lean vaporized fuel/air mixtures.

39. The fuel used in a Blowtorch can be either straight gas or a mixture of fuel gas and oxygen

40. As the piston approaches top -dead center, the mixture is ignited by the spark plug, and when the fuel vaporizes in the cylinder, the air and fuel mixture is cooled.

41. Method of using lean fuel-air mixtures at all operating regimes of a spark ignition engine

42. Fuel is sprayed into the air and a spark ignites the mixture.

43. The burner is configured for the staged introduction of combustion air to provide a fuel-rich combustion zone and a fuel-lean combustion zone.

44. Air-fuel mixture producing method and a device for carrying out said method

45. The target rich air-fuel ratio (afRich) and the target lean air-fuel ratio (afLean) are varied in accordance with an intake air amount (Ga).

46. The present invention relates to a method of operation for an internal combustion engine (1), and more precisely for a motor vehicle, in which a lean air-fuel mixture is supplied to the combustion chamber (4) during a first operation mode while a stoichiometric or rich air-fuel mixture is supplied to said combustion chamber (4) during a second operation mode.

47. The invention relates to a method for controlling a rich/lean combustion mixture, using an electrochemical gas sensor.

48. Substoichiometric combustion, i.e. using a fuel-rich mixture so that oxygen is a limiting factor (fuel acts also as reducing agent);

49. Energy Developments, operator of this project, also is demonstrating a lean fuel gas turbine which may use ventilation air methane for much of its fuel needs.

50. Energy Developments, operator of this project, also is demonstrating a lean fuel gas turbine which may use ventilation air methane for much of its fuel needs

51. An under-stoichiometric zone is created with a fuel/air mixture and primary air.

52. Method for controlling a motor vehicle engine for adjusting an air/fuel mixture richness

53. This concept is inadequate for simulating the high air to fuel ratios needed for stable lean-burn combustion.

54. Carburetor, device for supplying a spark-ignition engine with a mixture of fuel and air

55. Carburetor: Device for supplying a spark ignition engine with a mixture of fuel and air.

56. During the increase in temperature, the richness of the air/fuel mixture is varied by implementing successive phases of injecting relatively rich and lean mixtures independently of the consumption or of the renewal of oxygen in the exhaust line.

57. Not only will a lean air/fuel ratio cause Bogging, it will also burn down your engine faster because there’s not enough fuel to “cool” the piston down

58. A heat exchanger (22) transfers heat from turbine exhaust gases to the air/fuel mixture.

59. The invention makes it possible to increase the efficiency of an air-fuel mixture combustion.

60. The second resistance supports continued detonation of the remaining air-fuel mixture in the detonation portion.

61. The resulting pressure differential opens the valve and the fuel-air mixture flows into the crankcase.

62. This reduces surface tension allowing a better oxygen mixture therefore making the fuel easier to burn.

63. Antiknock additive, also known as fuel soluble additives, is a mixture of Antiknock additive and gasoline

64. The compressed air fuel mixture is then ignited by a spark or like controllable ignition source.

65. A single or multi-stage membrane system separates the hydrocarbon mixture into a sulfur-rich fraction and a sulfur-lean fraction.

66. Burning a special high octane fuel of gasoline blended with Benzole, the carburettor adjusted the richness of the fuel-air mixture according to the aircraft's altitude.

67. — the properties, timing or presence of the spark igniting the fuel/air mixture in the cylinder(s),

68. the properties, timing or presence of the spark igniting the fuel/air mixture in the cylinder(s),

69. Removal of particles from the exhaust gas of combustion engines operated with a predominantly stoichiometric air/fuel mixture

70. The invention provides a catalyst which can convert methane, carbon monoxide, and nitrogen oxides in lean, stoichiometric, and rich air/fuel environments.

71. Carburetors are used almost all Si engine for the preparation of combustible air-fuel mixture as a charge

72. The inventive method enables a stratified charge, ideal for the combustion of air/fuel mixture, to be obtained.

73. The disclosed catalyst anomaly diagnostic system actively controls the air-fuel ratio upstream of a catalyst to be alternately rich and lean.

74. The sulfur-lean fraction may be used in fuel mixtures and the sulfur-rich fraction may be further treated for sulfur reduction.

75. Ignition systems are not required for diesel engines which rely on compression to ignite the fuel/air mixture.

76. Tuned with a higher compression ratio so it can squeeze far more energy from its air-fuel mixture.

77. ATV Carburetors have outstanding street performance including controlling the float level, atomizing the fuel into a useable air/fuel mixture in the proper proportions, and transition smoothly between circuits

78. As soon as post-catalyst sensor output reaches a prescribed threshold, the air-fuel ratio is switched between lean control and rich control.

79. Method and device for control of the richness of the air/fuel feed mixture of an internal combustion engine

80. A spark which intermittently fails to ignite the fuel-air mixture may not be noticeable directly, but will show up as a reduction in the engine's power and fuel efficiency.