Shift shock reducing apparatus of CVT equipped vehicle
First Claim
1. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train constituted by a continuously variable transmission (CVT) and an engine, the shift shock reducing apparatus comprising:
- a calculating section calculating an inertia torque caused by a shifting from a rate of change in a CVT ratio per time; and
an output torque correcting section correcting an output torque of the engine on the basis of the calculated inertia torque so as to cancel the inertia torque.
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Accused Products
Abstract
A shift shock reducing apparatus installed in a vehicle which is equipped with a power train constituted by a continuously variable transmission (CVT) and an engine. The shift shock reducing apparatus comprises a calculating section which calculates an inertia torque caused by a shifting from a rate of change in a CVT ratio per time and an output torque correcting section which corrects a toque inputted to the CVT on the basis of the calculated inertia torque so as to cancel the inertia torque. Therefore, shift shocks due to the inertia torque is suppressed without generating a shift delay.
81 Citations
16 Claims
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1. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train constituted by a continuously variable transmission (CVT) and an engine, the shift shock reducing apparatus comprising:
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a calculating section calculating an inertia torque caused by a shifting from a rate of change in a CVT ratio per time; and an output torque correcting section correcting an output torque of the engine on the basis of the calculated inertia torque so as to cancel the inertia torque. - View Dependent Claims (3, 4, 5, 6, 7, 8, 10, 11)
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2. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train constituted by a continuously variable transmission (CVT) and an engine, the shift-shock reducing apparatus comprising:
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a calculating section calculating an inertia torque caused by a shifting from a rate of change in a CVT ratio per time; and an inertia torque canceling motor applying a torque for canceling the inertia torque to a transmission system of the CVT on the basis of the calculated inertia torque.
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9. A shift shock reducing apparatus as claimed in claim 9, wherein the operating condition includes a lockup condition where input and output elements of the torque converter are directly connected and a converter condition where the direct connection between the input and output elements is released.
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12. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train of a belt type continuously variable transmission (CVT) and an internal combustion engine, the shift shock reducing apparatus comprising:
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a primary rotation speed sensor detecting a rotation speed of a primary pulley of the CVT; a secondary rotation speed sensor detecting a rotation speed of a secondary pulley of the CVT; a throttle valve controlling the flow of air supplied to cylinders of the engine; and a controller arranged to calculate an inertia torque caused by a shifting from a rate of change in a ratio of the primary rotation speed to the secondary rotation speed and to control an opening of said throttle valve so as to cancel the inertia torque.
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13. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train of a belt type continuously variable transmission (CVT) and an internal combustion engine, the shift shock reducing apparatus comprising:
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a reversible motor installed between the CVT and the engine; a primary rotation speed sensor detecting a rotation speed of a primary pulley of the CVT; a secondary rotation speed sensor detecting a rotation speed of a secondary pulley of the CVT; and a controller arranged to calculate an inertia torque caused by a shifting from a rate of change in a ratio of the primary rotation speed to the secondary rotation speed and to control said reversible motor so as to generate a torque for canceling the inertia torque.
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14. A shift shock reducing apparatus of a vehicle, the vehicle being equipped with a power train constituted by a continuously variable transmission (CVT) and an engine, the shift shock reducing apparatus comprising:
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a calculating means for calculating an inertia torque caused by a shifting from a rate of change in a CVT ratio per time; and an output torque correcting means for correcting a toque inputted to the CVT on the basis of the calculated inertia torque so as to cancel the inertia torque. - View Dependent Claims (15, 16)
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Specification