US PATENT SUBCLASS 123 / 319
ENGINE SPEED REGULATOR

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

319ENGINE SPEED REGULATOR {16}
320  DF  .~> Responsive to deceleration mode (e.g., engine acting as a brake) {7}
330  DF  .~> Engine speed reduction by overriching the combustible mixture (e.g., choking engine) {1}
332  DF  .~> Engine speed reduction by fuel cutoff {1}
334  DF  .~> Engine speed reduction by partial or complete omission of the ignition {1}
336  DF  .~> Having plural throttle valve structure
337  DF  .~> Specific throttle valve structure
338  DF  .~> Fuel injection pump bypass control
339.1  DF  .~> Idle speed control {5}
342  DF  .~> Regulator changes length of accelerator linkage
343  DF  .~> Regulator accessory (e.g., cleaner, adjusting tool, etc.)
344  DF  .~> Charge proportion varying (e.g., the fuel-air ratio is varied)
345  DF  .~> By changing valve lift {1}
347  DF  .~> By changing valve timing {1}
349  DF  .~> Having condition responsive means with engine being part of a closed feedback system (e.g., cruise control) {4}
395  DF  .~> Open loop condition responsive {4}
402  DF  .~> Charge volume varying (e.g., total amount of mixture fed to engine is varied; relative amounts of air and fuel are fixed) {3}

DEFINITION

Classification: 123/319

ENGINE SPEED REGULATOR:

(under the class definition) Subject matter in which the output shaft speed of an internal combustion engine is controlled (i.e., accelerate, decelerate, or maintain constant R.P.M.) by varying the power input thereto.

(1) Note. The primary purpose of a speed regulator is to regulate the shaft speed of the engine and includes feedback or nonfeedback types. Since fuel injection pump governors almost always regulate the engine shaft speed by varying the amount of fuel injected, they have been included in the speed regulating subclasses. The primary purpose of the charge former is to form a combustible charge to be fed to the engine at any given operating condition. Charge former may utilize sensed engine parameters to adjust the quality of the mixture formed. The parameters may include engine speed, vacuum (load), air flow, etc.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

144+, and 180.1+.

60, Power Plants,

39.03, and 39.2+ for regulation of the power output of a power plant employing products of combustion.

73, Measuring and Testing, 488+, for a speed-responsive device to general application.

137, Fluid Handling,

47+, for speed-responsive valve control.

180, Motor Vehicles,

170+, for vehicle speed-responsive regulators.

188, Brakes,

266+, for internal resistance brakes of the fluid type in which no significant internal combustion engine is claimed.

477, Interrelated Power Delivery Controls, Including Engine Control, for interrelated controls between an engine and a transmission, clutch, or brake.