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US 2008/0156552 A1Published application
Engine power reduction during automatic transmission shifting
AssigneeHonda Motor Co., Ltd.
InventorMike Dickinson
Life of this patent
Estimating the term…
Abstract
An engine's power may be gradually reduced during a torque phase of a clutch-to-clutch up-shift within an automatic transmission and then reduced fully during a subsequent inertia phase.
Claims18
A method comprising the steps of:
- (a) providing a vehicle having an engine and an automatic transmission;
- (b) initiating a torque phase of a clutch-to-clutch up-shift within the automatic transmission;
- (c) gradually reducing the engine's power;
- (d) initiating an inertia phase of the clutch-to-clutch up-shift;
- and,
- (e) reducing the engine's power fully at substantially the same time the inertia phase is initiated.
3 more elements
A method comprising the steps of:
- (a) providing a vehicle having an engine aid an automatic transmission;
- (b) gradually reducing the engine's power during a torque phase of a clutch-to-clutch up-shift within the automatic transmission;
- and,
- (c) reducing the engine's power fully at about a first time that the clutch-to-clutch up-shift transitions from the torque phase to an inertia phase.
1 more element
A vehicle comprising:
- an engine;
- all automatic transmission;
- and,
- a control unit that:
- (1) gradually reduces the engine's power during a torque phase of a clutch-to-clutch up-shift within the automatic transmission;
- and, (2) reduces the engine's power fully at about a first time that the clutch-to-clutch up-shift transitions from the torque phase to an inertia phase.
3 more elements
Dependencies are inferred from the claim text.