US PATENT SUBCLASS 123 / 434
CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL)

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

434CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
435  DF  .~> Including cylinder pressure or temperature responsive means
436  DF  .~> Including means responsive to instantaneous change in engine speed
672  DF  .~> Including exhaust gas condition responsive means {11}
704  DF  .~> Air/fuel ratio prior to combustion responsive means
437  DF  .~> Auxiliary control of carburetor fuel metering {2}
442  DF  .~> Injection or carburetion system having a series of throttle valves
443  DF  .~> Alternate or simultaneous lean-rich
444  DF  .~> Having fluidic logic control means
445  DF  .~> Fuel injection system {5}
495  DF  .~> With fuel pump {11}
510  DF  .~> Fuel flow regulation between the pump and the charge-forming device {5}
518  DF  .~> Having fuel vapor recovery and storage system {1}
522  DF  .~> Liquid fuel evaporating by submerged air supply
523  DF  .~> Liquid fuel evaporating by extended fuel film {1}
525  DF  .~> Combined liquid and gaseous fuel {1}
527  DF  .~> Gaseous fuel and air mixer {2}
530  DF  .~> Constant flow fuel supply
531  DF  .~> Auxiliary air or gas used to inject fuel {4}
536  DF  .~> Combustible mixture ionization, ozonation, or electrolysis {3}
540  DF  .~> Cooling of combustible mixture {2}
543  DF  .~> Heating of combustible mixture {13}
559.1  DF  .~> Supercharger {9}
567  DF  .~> Oxidant is solely oxygen
568.11  DF  .~> Exhaust gas used with the combustible mixture (e.g., emission control Exhaust Gas Recirculation (EGR) valve) {10}
572  DF  .~> Crankcase vapor used with combustible mixture {2}
575  DF  .~> Diverse fuel supply {3}
579  DF  .~> Multiple carburetors {4}
585  DF  .~> Auxiliary air or oxygen added to combustible mixture {3}
590  DF  .~> Charge-mixing device in intake (e.g., device which insures the atomization of the combustible mixture) {3}

DEFINITION

Classification: 123/434

CHARGE-FORMING DEVICE (E.G., POLLUTION CONTROL):

(under the class definition) Subject matter including means for forming a mixture of fuel and an oxidant, or an accessory therefor not provided for elsewhere.

(1) Note. The device may use airflow through it to entrain the fuel (carburetor) or may force the fuel under pressure into the air (fuel injection). Fuel may be injected into the air intake or directly into the combustion chamber of an associated engine.

SEE OR SEARCH CLASS

137, Fluid Handling,

482, for control of fuel supply in response to variations of barometric pressure in combustion engine induction type flow control.

261, Gas and Liquid Contact Apparatus,

38+, for carburetors, per se, including those with thermostatic or vacuum controls.