Paddle shifter control of hybrid powertrain
First Claim
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1. A vehicle comprising:
- a controller programmed to change a gear of a transmission in a hybrid powertrain in response to receiving a request from a paddle shifter and, in response to the hybrid powertrain operating in an economy mode and receiving the request in a presence of a brake demand signal indicative of a demand for braking, maintain the gear in an automatically selected gear.
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Abstract
A vehicle comprises a hybrid powertrain includes an electric machine coupled between an automatic gearbox and an engine. The vehicle includes paddle shifters configured to output a driver requested gear change. The hybrid powertrain is configured to selectively operate in an economy mode that optimizes fuel economy. While operating in the economy mode, a controller may selectively inhibit the driver requested gear change when the change may negatively impact fuel economy. In the economy mode, the driver requested gear change may be inhibited during a demand for braking. If the driver requested gear change is a downshift request, the downshift is inhibited and simulated using electric machine torque.
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Citations
19 Claims
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1. A vehicle comprising:
a controller programmed to change a gear of a transmission in a hybrid powertrain in response to receiving a request from a paddle shifter and, in response to the hybrid powertrain operating in an economy mode and receiving the request in a presence of a brake demand signal indicative of a demand for braking, maintain the gear in an automatically selected gear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hybrid powertrain comprising:
a controller programmed to change a gear of a transmission in response to receiving a request from a paddle shifter and, in response to the hybrid powertrain operating in an economy mode and receiving a downshift request in a presence of brake demand and accelerator demand signals indicative of a coastdown condition, increase a regenerative torque command for an electric machine by a predetermined amount without changing the gear. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method comprising:
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maintaining by a controller an automatically selected gear of a transmission of a hybrid powertrain in response to receiving a gear change request from a driver while the hybrid powertrain is operating in an economy mode and a brake demand signal is indicative of a demand for braking; outputting by the controller a signal indicative of a gear change denial to a display; and changing by the controller a gear of the transmission according to the automatically selected gear and ceasing to output the signal indicative of the gear change denial in response to the gear change request matching the automatically selected gear. - View Dependent Claims (16, 17, 18, 19)
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Specification