Patent ID: 6055476
Filing Date: 2000-04-25
Classification: F02D,Y02T

Abstract:
A torque controllable engine comprising:a throttle valve;an accelerator sensor for sensing an accelerator opening degree of an accelerator pedal;an engine speed sensor for sensing an engine speed of the engine; anda controller comprising;i) a first section for calculating a target equivalent ratio,ii) a second section for calculating a unit demand throttle opening area which is a demand throttle opening area per unit displacement for one engine revolution, in accordance with the accelerator opening degree and the engine speed,iii) a third section for calculating a target base intake air quantity in accordance with the unit demand throttle opening area,iv) a fourth section for calculating a target control intake air quantity in accordance with the target base intake air quantity and the target equivalent ratio,v) a fifth section for calculating a desired target throttle opening degree in accordance with the target control intake air quantity and the engine speed, andvi) a sixth section for controlling an actual throttle opening degree of the throttle valve to the target throttle opening degree.