Patent ID: 8095255
Filing Date: 2012-01-10
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A control apparatus for a hybrid vehicle which comprises an internal combustion, a first electric motor and a second motor connected to a driving shaft as a power source, and which comprises an engaging device comprising a first and a second engagement elements which can engage with each other under a rotation synchronization status, a first detecting device for being capable of detecting first rotational speed as rotational speed of the first engagement element, a power dividing device comprising a plurality of rotational elements being adapted to mutually perform differential rotation, which includes a first rotational element connected to an output shaft of the internal combustion, a second rotational element connected to an output shaft of the first electric motor, a third rotational element connected to an output shaft of the second electric motor, and a fourth rotational element connected to the first engagement element, and a second detecting device for being capable of detecting second rotational speed as rotational speed corresponding to other rotational elements of the plurality of rotational elements except the fourth rotational element, said hybrid vehicle being performed feedback control in order to converge the first rotational speed at target rotational speed corresponding to the rotation synchronization status in engaging the first engagement element with the second engagement element, said control apparatus comprising: a judging device for judging whether or not the detected first rotational speed is within a predetermined low rotational range; a estimating device for estimating the first rotational speed on the basis of the detected second rotational speed if it is judged that the detected first rotational speed is within the predetermined low rotational range; and a switching control device for switching the first rotational speed, which is referred to in determining a feedback control amount in the feedback control, from the detected first rotational speed to the estimated first rotational speed if it is judged that the detected first rotational speed is within the predetermined low rotational range.