Control apparatus of driving force in case of belt slipping for vehicle equipped with V-belt continuously variable transmission and control method thereof
AssigneesNissan Motor Co., Ltd., JATCO Ltd
InventorsTsuyoshi Yamanaka, Manabu Yamanaka, Shigeki Shimanaka
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Abstract
A control apparatus of a driving force in case of belt slipping includes a belt slip control detecting unit adapted to detect that the belt slip control is in execution, a belt contact radius ratio calculating unit adapted to calculate a belt contact radius ratio of the V-belt to the pulleys, and a power source output torque determining unit adapted to determine a target power output torque according to the belt contact radius ratio in execution of the belt slip control in response to signals from the belt slip control detecting unit and the belt contact radius ratio calculating unit.
Claims7
A control apparatus of a driving force in case of belt slipping for a vehicle equipped with a V-belt continuously variable transmission where rotation from a power source can be transmitted via a V-belt wrapped around pulleys, a pulley rotation ratio between the pulleys can be continuously changed toward a value corresponding to a target speed ratio by stroking movable sheaves defining pulley V grooves for wrapping the V-belt relative to fixed sheaves in an axial direction, and a slip state ofthe V-belt to the pulleys is controlled to a predetermined slip state by a belt slip control, comprising:
- a belt slip control detecting unit adapted to detect that the belt slip control is in execution;
- a belt contact radius ratio calculating unit adapted to calculate a belt contact radius ratio of the V-belt to the pulleys;
- and
- a power source output torque determining unit adapted to determine a target power source output torque according to the belt contact radius ratio in execution of the belt slip control in response to signals from the belt slip control detecting unit and the belt contact radius ratio calculating unit.
A control method of a driving force in case of belt slipping for a vehicle equipped with a V-belt continuously variable transmission where rotation from a power source can be transmitted via a V-belt wrapped around pulleys, a pulley rotation ratio between the pulleys can be continuously changed toward a value corresponding to a target speed ratio by stroking movable sheaves defining pulley V grooves for wrapping the V-belt relative to fixed sheaves in an axial direction, and a slip state of the V-belt to the pulleys is controlled to a predetermined slip state by a belt slip control, comprising:
- detecting that the belt slip control is in execution;
- using a controller;
- calculating a belt contact radius ratio of the V-belt to the pulleys using the controller;
- and
- determining a target power source output torque, which is utilized for an output control of the power source,according to the belt contact radius ratio in execution of the belt slip control in response to results of the detecting operation and the calculating operation using the controller.
A control apparatus of a driving force in case of belt slipping for a vehicle equipped with a V-belt continuously variable transmission where rotation from a power source can be transmitted via a V-belt wrapped around pulleys, a pulley rotation ratio between the pulleys can be continuously changed toward a value corresponding to a target speed ratio by stroking movable sheaves defining pulley V grooves for wrapping the V-belt relative to fixed sheaves in an axial direction, and a slip state of the V-belt to the pulleys is controlled to a predetermined slip state by a belt slip control, comprising:
- belt slip control detecting means adapted to detect that the belt slip control is in execution;
- belt contact radius ratio calculating means adapted to calculate a belt contact radius ratio of the V-belt to the pulleys;
- and
- power source output torque determining means adapted to determine a target power source output torque according to the belt contact radius ratio in execution of the belt slip control in response to signals from the belt slip control detecting means and the belt contact radius ratio calculating means.
Dependencies are inferred from the claim text.