(under subclass 406.12) Subject matter wherein the regulating means to vary spark ignition timing is responsive to either (a)a sudden demand for an increase in the power or the torque output of the engine, or (b) a sudden demand for a decrease in the power or the torque output of the engine.
(1) Note. Acceleration or deceleration may be indicated by
the rate of change of engine speed or load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406.25, for an internal combustion engine closed loop spark ignition timing electronic control responsive to engine speed roughness, and acceleration or deceleration.
406.36, for an internal combustion engine closed loop spark ignition timing electronic control responsive to engine knock, and acceleration or deceleration.
406.46, for an internal combustion engine spark ignition timing electronic control which also includes fuel or combustible mixture control and is responsive to engine acceleration or deceleration.
SEE OR SEARCH CLASS 73, Measuring and Testing,
116+, for internal-combustion engine testing, per se.
701, Data Processing: Vehicles, Navigation, and Relative Location, subclass 110 for a digital or programmed data processing system associated with an internal combustion engine, designed to include the regulation of the vehicle speed, acceleration, or deceleration, where significant details of the mechanical construction of the component or subsystem within a vehicle are not claimed.
