Methods and systems for operating driveline of hybrid engine powertrain
A method of operation, a technology of the power train, applied in the arrangement of multiple different prime movers of general power plants, hybrid vehicles, drive control systems for road vehicles, etc., and can solve problems such as increasing wheel torque, inertia torque disturbance, etc.
Active Publication Date: 2018-05-11
FORD GLOBAL TECH LLC
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Problems solved by technology
In one example, during an upshift, when approaching a stability metric threshold, clutch pressure from a dual clutch transmission may produce a speed change that results in inertial torque disturbances that increase wheel torque, especially when the vehicle is cornering
While this disturbance can be reduced by an electric machine downstream of the dual clutch transmission, by a motor upstream of the engine, or by spark retard, reducing the disturbance in this manner may reduce the execution of the driver's desired longitudinal acceleration
Method used
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[0031] The following description relates to systems and methods for operating a driveline of a hybrid vehicle. Figure 1A to Figure 4 An exemplary hybrid vehicle system is shown that includes a driveline with a motor, an integrated starter / generator, a dual clutch transmission, and an electric machine / electric machine downstream of the dual clutch transmission. Figure 5 to Figure 8 Describes and illustrates the manner of operation for engaging and disengaging a park state in a dual clutch transmission. Figure 9 and Figure 10 A manner of controlling a hybrid vehicle powertrain that may improve vehicle stability is described. can be used as Figure 11-17B The clutches of the dual clutch transmission are adapted and used during shifting of the dual clutch transmission. The engine that can start a hybrid vehicle can be started and engaged to Figures 18A-19B Other components of the hybrid vehicle driveline are described.
[0032] Figure 1A An exemplary vehicle propulsion ...
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Methods and systems are provided for adjusting clutch pressures and electric machine torques as a function of a stability metric threshold(s) in order to balance performance and charging of an onboardenergy storage device. In one example, a method comprises during an upshift of a transmission from a first gear to a second gear, adjusting a clutch pressure of the transmission to adjust slippage ofa clutch in response to a vehicle stability control parameter exceeding a threshold. In this way, torque delivered to a transmission output shaft may be reduced, which may increase vehicle stability.
Description
[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 415,392, filed October 31, 2016, entitled "Methods and System for a Hybrid Vehicle," the entire contents of which are hereby incorporated by reference in their entirety for for all purposes. technical field [0003] The present description generally relates to methods and systems for controlling clutch capacity. These methods and systems may be particularly useful for hybrid vehicles including dual clutch transmissions. Background technique [0004] Hybrid vehicles can be propelled by both an engine and an electric motor. Where such vehicles include high performance vehicles having an electric machine downstream of a dual clutch transmission, there may be several problems associated with aggressive driving. In one example, during an upshift, when approaching a stability metric threshold, clutch pressure from a dual clutch transmission may...
Claims
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IPC IPC(8): B60W20/20B60W20/40B60W30/18
CPCB60W10/06B60W10/08B60W10/113B60W20/40B60W10/02B60W10/10B60W30/18054B60W10/023B60W20/00B60W20/10B60W30/18B60W20/20B60W30/181B60W2710/083B60W2710/0644B60W2710/0666B60W2520/105B60W2520/10B60W2520/125B60W2520/28B60W2510/1005B60W2510/1015B60W2510/104B60W2510/1075B60W2510/0638B60W2510/0657B60W10/188B60W2710/188B60W30/18027B60Y2400/428B60W20/15B60W2710/021B60W2710/027B60W2710/1005B60Y2200/92Y10S903/93B60W30/19F16H61/688F16H63/48B60Y2300/182B60Y2400/42Y10S903/914Y02T10/62B60W2510/188B60W2710/0616B60W2710/08B60W2552/15B60K6/48B60L2240/421B60L2240/423F16H61/46F16H61/47B60W2510/083B60W2510/1095B60W2540/10B60W2710/1011B60W2710/1016B60W2710/1022B60K6/26B60K6/442B60K2006/262B60W10/26B60W30/18109B60W2510/0225F16H63/3433F16H2061/124F16H61/0059B60K6/387F16D48/062
Inventor J·梅耶M·付多尔K·J·米勒M·J·谢尔顿W·J·奥特曼
Owner FORD GLOBAL TECH LLC