Gregory T. Weber

TL;DR: In this paper, a method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine was proposed, which includes the steps of determining a volumetric efficiency value of the intake manifold, determining whether a speed of the engine is accelerating, getting a manifold unfilling constant if the engine was not accelerating, and calculating a K-factor based on this value and either the manifold filling constant or manifold unfilled constant.

TL;DR: In this article, a method of load and speed modifying on fuel lean-out for an internal combustion engine includes the steps of sensing a speed of the engine, determining an engine speed modifier as a function of current sensed engine speed, sensing a manifold absolute pressure (MAP) of an intake manifold of an engine, and adding the determined engine speed and engine load modifier together to yield a speed/load modifier, and applying the speed and load modifier value to a fuel pulsewidth value of fuel injectors for the engine and reducing the amount of fuel injected into the engine by the fuel inject

TL;DR: In this article, a method of firing fuel injectors for an engine of an automotive vehicle is presented, which includes the steps of determining whether injection timing for firing injectors has changed from one predetermined state to another predetermined state of a distributor reference signal.

TL;DR: In this paper, a method of throttle fuel lean-out for an internal combustion engine including the steps of sensing a throttle position of a throttle for the engine with throttle position sensor, calculating a delta throttle value based on the sensed throttle position, determining whether the engine is in a throttle deceleration condition, linearizing the change in throttle position with respect to absolute throttle position and engine speed, and applying the calculated throttledeceleration fuel leanout multiplier value to a fuel pulsewidth value of fuel injectors for engine and reducing the amount of fuel injected into the engine by the

TL;DR: In this article, a method of altitude compensation of exhaust gas recirculation in an intake manifold for an internal combustion engine was proposed, which includes the steps of calculating vacuum at sea level, calculating the vacuum at present altitude of the engine, determining whether the calculated vacuum at the sea level is equal to the measured vacuum at current altitude, and correcting the exhaust gas re-circulation in the intake manifold.