Method for operating an automatic or semi-automatic transmission of a heavy vehicle when in idle-driving mode
First Claim
1. A method for operating an automatic or semi-automatic transmission of a heavy vehicle when in idle-driving mode, the method comprising:
- supplying fuel to an engine of the heavy vehicle at a rate that facilitates engine-idle operation;
engaging the transmission in a gear higher than the starting gear of the transmission and permitting the heavy vehicle to operate at a first substantially uniform driving velocity under engine-idle power; and
upshifting the transmission by manual control of a control device for manual gear selection and then driving the heavy vehicle at a second substantially uniform driving velocity under engine-idle power, wherein the second substantially uniform driving velocity is higher than the first substantially uniform driving velocity.
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Accused Products
Abstract
A method for operating a semi-automatic or automatic mechanical transmission of a heavy truck when driving at idle speed is provided. The method includes supplying fuel to the engine of the heavy truck at a rate that facilitates engine-idle operation. In another step, the method engages the automatic or semi-automatic transmission in a gear higher than the starting gear of the transmission and permits the truck to operate at a first substantially uniform driving velocity under engine-idle power. Depending upon traffic and environmental requirements which require a higher speed, the driver upshifts the semi-automatic or automatic transmission by depressing a control device for manual gear selection arranged on a gear shift lever of the truck and then drives the truck at a second substantially uniform driving velocity under engine-idle power. The second substantially uniform driving velocity is greater than the first substantially uniform driving velocity.
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Citations
11 Claims
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1. A method for operating an automatic or semi-automatic transmission of a heavy vehicle when in idle-driving mode, the method comprising:
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supplying fuel to an engine of the heavy vehicle at a rate that facilitates engine-idle operation; engaging the transmission in a gear higher than the starting gear of the transmission and permitting the heavy vehicle to operate at a first substantially uniform driving velocity under engine-idle power; and upshifting the transmission by manual control of a control device for manual gear selection and then driving the heavy vehicle at a second substantially uniform driving velocity under engine-idle power, wherein the second substantially uniform driving velocity is higher than the first substantially uniform driving velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification