Systems and methods for improving vehicle driveline operation
First Claim
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1. A driveline operating method, comprising:
- supplying a first pressure sequence to apply a driveline disconnect clutch, the first pressure sequence including a first boost phase, a first constant pressure phase, and a first ramp phase;
supplying a second pressure sequence to apply a transmission shifting clutch, the second pressure sequence including a second boost phase, a second constant pressure phase, and a second ramp phase; and
delaying one of the first boost phase or the second boost phase in response to the other of the first boost phase or the second boost phase.
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Abstract
Systems and methods for improving operation of a hybrid vehicle driveline are presented. In one example, pressures applied to two different clutches are coordinated such that a pressure boost phase of a driveline disconnect clutch does not occur at a same time as a pressure boost phase of a transmission shifting clutch.
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Citations
12 Claims
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1. A driveline operating method, comprising:
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supplying a first pressure sequence to apply a driveline disconnect clutch, the first pressure sequence including a first boost phase, a first constant pressure phase, and a first ramp phase; supplying a second pressure sequence to apply a transmission shifting clutch, the second pressure sequence including a second boost phase, a second constant pressure phase, and a second ramp phase; and delaying one of the first boost phase or the second boost phase in response to the other of the first boost phase or the second boost phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification