Longitudinal G adjusted throttle response

A system for adjusting an engine throttle opening amount, the system comprising:

• a slope-determining unit configured to determine a longitudinal angle of inclination of a vehicle from one of
• a current engine torque for a given velocity, and
• a deviation from a flat road acceleration to a known predetermined acceleration;
• a throttle request determining unit configured to determine a throttle request;
• and
• an engine control unit configured to control the engine throttle opening amount based on the determinations of the slope-determining unit and the throttle request determining unit on the condition that predetermined criteria is satisfied,
• wherein the engine control unit receives as inputs the angle of inclination of the vehicle determined by the slope-determining unit, the throttle request determined by the throttle request determining unit, and a current throttle opening amount, the engine control unit including:
• a calculating unit configured to calculate a slope gain factor based on the angle of inclination of the vehicle determined by the slope-determining unit;
• and
• a comparing unit configured to compare the slope gain factor to a predetermined threshold,
• wherein on the condition that the slope gain factor is greater than the predetermined threshold, the engine control unit is configured to generate a throttle command to increase the current throttle opening amount according to at least one predetermined setting based on the throttle request and the slope gain factor,
• wherein on the condition that the slope gain factor is less than or equal to the predetermined threshold, the engine control unit is configured to generate a throttle command that controls the throttle opening amount based on the throttle request and independently of the slope gain factor, and
• wherein the predetermined threshold is variable and is a function of at least one of an instantaneous speed of the vehicle and the angle of inclination of the vehicle.