Control device

Abstract

A control system configured with a speed change mechanism. When starting combustion in an internal combustion engine under a combustion-stopped vehicle running condition, the combustion in the internal combustion engine is stopped, the speed change mechanism forms the one-way transmission speed, and the output member rotates. A rotational speed feedback control is executed that sets a value that multiplies a rotational speed of the output member by a speed ratio of the one-way transmission speed as a reference rotational speed of the input member, sets a starting rotational speed, and controls a rotary electric machine such that the rotational speed of the input member matches the target rotational speed. During execution of the rotational speed feedback control, a start control is performed that increases engagement pressure of the clutch to increase a rotational speed of the internal combustion engine and start combustion in the internal combustion engine.

Description

technical field [0001] The present invention relates to a control device for controlling a driving device for a hybrid vehicle. The driving device for a hybrid vehicle includes: an input member drivingly connected to a rotary electric machine; a clutch selectively drivingly connecting the input member to an internal combustion engine; The connected output member and a plurality of shift speeds selectively formed by controlling the engagement and disengagement of the plurality of engagement members are provided, and the rotation speed of the input member is shifted according to the speed ratio of each shift speed to change the speed of the input member. It is transmitted to the variator of the output member. Background technique [0002] A hybrid vehicle capable of achieving an improvement in the fuel efficiency of the internal combustion engine and a reduction in exhaust gas by using both the internal combustion engine and the rotary electric machine is put into practical us...

AI Technical Summary

Problems solved by technology

However, when the added torque is smaller than the actual starting torque, the rotation speed of the rotating electric machine decreases with the increase of the clutch engagement pressure, and the internal combustion engine may not be able to start.

Conversely, when the additional torque is larger than the actual starting torque, the internal combustion engine can be started, but the torque larger than the driving force requested by the driver is transmitted to the wheel side, so the driver may feel uncomfortable

In addition, when the actual starting torque fluctuates with the start of the internal combustion engine, there is a problem that the rotation speed of the rotating electric machine fluctuates, and the one-way clutch may repeatedly disengage and engage. Changes in driving force transmitted from the wheel side

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