Vehicle transmission control system and method
First Claim
Patent Images
1. A vehicle having a transmission control system, comprising:
- a) an engine that powers said vehicle;
b) a transmission that changes ratios between engine speed and wheel speed, said transmission having n gears;
c) at least one control unit configured to shift the transmission in a plurality of lower gears substantially against the governed speed of the engine and to shift the transmission in a plurality of higher gears substantially against the peak torque speed of the engine.
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Abstract
A vehicle, such as, e.g., a diesel-powered truck, has a transmission control system that, e.g., improves fuel efficiency and/or consumption. In some embodiments, the vehicle includes: an engine that powers said vehicle; a transmission to change ratios between engine speed and wheel speed; and at least one control unit configured to shift the transmission in a plurality of lower gears substantially against the governed speed of the engine and to shift the transmission in a plurality of higher gears substantially against the peak torque speed of the engine.
41 Citations
32 Claims
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1. A vehicle having a transmission control system, comprising:
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a) an engine that powers said vehicle;
b) a transmission that changes ratios between engine speed and wheel speed, said transmission having n gears;
c) at least one control unit configured to shift the transmission in a plurality of lower gears substantially against the governed speed of the engine and to shift the transmission in a plurality of higher gears substantially against the peak torque speed of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for controlling a transmission system of a truck, comprising:
controlling an engine and/or transmission having n gears to shift the transmission in at least four lower gears substantially against the governed speed of the engine and to shift the transmission in at least four higher gears substantially against the peak torque speed of the engine. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
Specification