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Method and system for controlling driveline lash in a hybrid vehicle
US8968151B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968151-B2 |
| Application number | US-201213465327-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 7, 2012 |
| Priority date | May 7, 2012 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A vehicle has an engine, an upstream clutch, an electric machine, a downstream clutch, a transmission gearbox, and a controller. The controller is configured to: (i) control engagement of the downstream clutch, (ii) monitor a vehicle torque, and (iii) control electric machine torque to a designated rate when the vehicle torque changes direction and the electric machine is operating. A method for controlling a hybrid vehicle includes engaging a clutch downstream of the electric machine, monitoring a vehicle torque, and controlling electric machine torque to a designated rate when vehicle torque changes direction and the electric machine is operating. A hybrid vehicle system has an electric machine and a controller configured to (i) control electric machine torque to a designated rate within a time zone, and (ii) control at least one of the electric machine torque and an engine torque to meet driver demand outside of the zone.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle comprising: an electric machine connected to an engine by an upstream clutch and connected to a transmission gearbox by a torque converter and a bypass, downstream clutch; and a controller configured to reduce lash in a driveline by controlling a torque of the electric machine to a designated rate of change within a time zone characterized by a vehicle torque changing direction and being substantially zero, and the electric machine is operating.…
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8968151B2 cover?
- A vehicle has an engine, an upstream clutch, an electric machine, a downstream clutch, a transmission gearbox, and a controller. The controller is configured to: (i) control engagement of the downstream clutch, (ii) monitor a vehicle torque, and (iii) control electric machine torque to a designated rate when the vehicle torque changes direction and the electric machine is operating. A method fo…
- Who is the assignee on this patent?
- Dai Zhengyu, Jiang Hong, Nedorezov Felix, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B60W10/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).