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公开(公告)号：US20180319399A1
公开(公告)日：2018-11-08
申请号：US16033550
申请日：2018-07-12
摘要： Systems and methods for reducing perception of transitions from shifting a transmission from neutral to drive are described. In one example, the transmission is shifted from neutral to drive in response to brake pedal motion before the brake pedal is fully released so that timing of pressurizing clutches and engaging a forward gear is advanced to occur while the brake pedal is still applied.
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公开(公告)号：US10518780B2
公开(公告)日：2019-12-31
申请号：US16033550
申请日：2018-07-12
IPC分类号： F16H59/54 , B60W30/188 , F16H61/02 , F16H59/44 , B60W10/11 , B60W10/06 , F16H59/60 , F16H63/40
摘要： Systems and methods for reducing perception of transitions from shifting a transmission from neutral to drive are described. In one example, the transmission is shifted from neutral to drive in response to brake pedal motion before the brake pedal is fully released so that timing of pressurizing clutches and engaging a forward gear is advanced to occur while the brake pedal is still applied.
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公开(公告)号：US11066976B2
公开(公告)日：2021-07-20
申请号：US16150107
申请日：2018-10-02
发明人： Eric Kurtz , Sathish Atluri , Daniel Styles , Paul Tennison
摘要： Methods and systems are provided for improving catalyst function during an engine cold-start. In one example, at key-off, a duration elapsed till a subsequent key-on is predicted based on drive history and spatial awareness data. Then, based on the duration, an identity and order of operating one or more catalyst heating devices is selected.
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公开(公告)号：US20180029598A1
公开(公告)日：2018-02-01
申请号：US15224244
申请日：2016-07-29
IPC分类号： B60W30/188 , F16H63/40 , B60W10/06 , F16H59/54 , F16H59/60 , B60W10/11 , F16H61/02 , F16H59/44
CPC分类号： B60W30/188 , B60W10/06 , B60W10/11 , B60W2520/10 , B60W2540/12 , B60W2540/16 , B60W2550/10 , B60W2710/0605 , B60W2710/0633 , B60W2710/0666 , B60W2710/1005 , F16H59/44 , F16H59/54 , F16H61/0204
摘要： Systems and methods for reducing perception of transitions from shifting a transmission from neutral to drive are described. In one example, the transmission is shifted from neutral to drive in response to brake pedal motion before the brake pedal is fully released so that timing of pressurizing clutches and engaging a forward gear is advanced to occur while the brake pedal is still applied.
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公开(公告)号：US11480122B1
公开(公告)日：2022-10-25
申请号：US17303212
申请日：2021-05-24
发明人： Jason Brian Martz , Christopher Cundy , Daniel William Kantrow , Eric Matthew Kurtz , Daniel Joseph Styles , Sathish Atluri , Clayton Mikush , Joshua Zachary Fried
IPC分类号： F02D41/38 , F02D41/02 , F02B75/02 , F01L13/00 , F02D41/06 , F01L13/08 , F01N13/10 , F02D41/00
摘要： Methods and systems are provided for cylinder deactivation to reduce tailpipe emissions and increase exhaust temperature. In one example, a method may include operating a first set of cylinders in a first combustion cycle over modified eight strokes and a second set of cylinders in a second combustion cycle over modified four strokes. Each cylinder in the first set of cylinders may be selectively deactivated via a variable displacement engine (VDE) mechanism while each cylinder in the second set of cylinders may be selectively deactivated via an active decompression technology (ADT) mechanism.
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公开(公告)号：US10518773B2
公开(公告)日：2019-12-31
申请号：US15864564
申请日：2018-01-08
发明人： Yang Xu , Zhengyu Dai , Guopeng Hu , Sathish Atluri , David Peterson , Qi Wang
IPC分类号： B60W30/18 , B60W10/02 , B60W10/184
摘要： A vehicle includes a transmission, friction brakes, and a controller. The transmission has a clutch that is configured to transfer torque from an input of the transmission to a drive wheel. The controller is programmed to, in response to application of the friction brakes resulting in a stationary position of the vehicle, disengage the clutch to establish a neutral condition of the transmission. The controller is also programmed to, in response to a command to launch the vehicle while the transmission is in the neutral condition, engage the clutch. The controller is further programmed to, in response to an estimated wheel torque exceeding a rollback threshold during the clutch engagement, release the friction brakes. The wheel torque is based on an estimated clutch torque which is based on a clutch pressure and a transmission input torque.
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公开(公告)号：US10086840B2
公开(公告)日：2018-10-02
申请号：US15224244
申请日：2016-07-29
IPC分类号： B60W30/188 , F16H61/02 , F16H63/40 , F16H59/44 , F16H59/54 , F16H59/60 , B60W10/11 , B60W10/06
摘要： Systems and methods for reducing perception of transitions from shifting a transmission from neutral to drive are described. In one example, the transmission is shifted from neutral to drive in response to brake pedal motion before the brake pedal is fully released so that timing of pressurizing clutches and engaging a forward gear is advanced to occur while the brake pedal is still applied.
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公开(公告)号：US09944288B1
公开(公告)日：2018-04-17
申请号：US15469991
申请日：2017-03-27
发明人： Guopeng Hu , Zhengyu Dai , Christoph Henel , Sathish Atluri , Yang Xu
IPC分类号： B60W10/11 , B60W10/184 , B60W30/18 , B60T7/12 , B60W10/02
CPC分类号： B60W30/18118 , B60T7/122 , B60T8/17 , B60T2201/06 , B60T2260/04 , B60T2260/09 , B60W10/02 , B60W10/06 , B60W10/11 , B60W10/115 , B60W10/18 , B60W10/184 , B60W2510/0275 , B60W2510/106 , B60W2520/04 , B60W2520/30 , B60W2540/12 , B60W2550/142 , B60W2710/1005 , B60W2710/18
摘要： A transmission controller implements a neutral idle feature to reduce fuel consumption. A brake controller implements a Hill Start Assist feature to prevent roll-back when a vehicle is launching on an uphill grade. The transmission controller and the brake controller communicate to implement these features in a synergistic manner. Within certain road grade ranges, the transmission requests Hill Start Assist before activating neutral idle and does not activate neutral idle until it receives confirmation that Hill Start Assist is active. The transmission controller provides a powertrain torque estimate to the brake controller which the brake controller uses to determine when to release the brakes during an assisted start.
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