초록 ▼

A control unit (7) for an internal combustion engine (ICE) (1) in a motor vehicle includes a control parameter computation unit 6 which provides output signals controlling the ignition instant of an ignition unit (5) and the fuel injection characteristics of the fuel injection unit 4, thereby contro

A control unit (7) for an internal combustion engine (ICE) (1) in a motor vehicle includes a control parameter computation unit 6 which provides output signals controlling the ignition instant of an ignition unit (5) and the fuel injection characteristics of the fuel injection unit 4, thereby controlling operation of the ICE. Depending on an operating parameter of the ICE (1), preferably load, the ignition angle is corrected by an ignition angle correction unit (11) by adding a correction factor, dynamically, as the load changes. The correction factor is determined, preferably, by sensing incremental changes in loading and, equally incrementally, changing the ignition angle, repetitively, as the loading changes. The method can be realized entirely by software within a known ignition angle correction unit (7).

대표청구항 ▼

Method of dynamically and smoothly controlling the ignition angle, particularly under conditions of acceleration, in an automotive internal combustion engine having means (6, 12) for controlling the instant of ignition of a combustible mixture, with respect to a reference position (TDC) of the engin

Method of dynamically and smoothly controlling the ignition angle, particularly under conditions of acceleration, in an automotive internal combustion engine having means (6, 12) for controlling the instant of ignition of a combustible mixture, with respect to a reference position (TDC) of the engine; means (8) for sensing the engine load and providing a load-representative signal (L); and means (11) for changing the time of the ignition instant by steps with respect to the reference position, upon a change in load, and responsive to said load-representative signal (L), comprising the steps of sensing an operating parameter, namely load (L), of the engine; and repetitively selecting a magnitude for each ignition instant change step as a function of the derivative (dL/dt) of said operating parameter and gradually reducing said magnitude at least until a subsequent change step, thereby obviating abrupt changes at low accelerations.