Control system/method for default start gear ratio selection
First Claim
1. A method of controlling an automated mechanical change-gear transmission system (10) comprising a fuel throttle control (24), a fuel throttle-controlled engine (14), a multi-speed, change-gear mechanical transmission (12) having a lowest grouping of gear ratios (first through fifth), each suitable for start-from-stop operation and having a specific ratio within said lowest grouping of ratios determined to be the predetermined default start ratio (GRDS), a central processing unit (38) for receiving inputs and for processing same according to predetermined logic rules to issue command output signals to non-manually controlled operators including a transmission operator (34), said processing unit sensing system parameters indicative of a requirement for a shift directly into the default start ratio and effective to issue command output signals for a shift directly into the default start ratio, said method comprising:
- providing a series of actions for operator manual selection of a new default start ratio (GRDS).
1 Assignment
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Accused Products
Abstract
A control system and method for automated mechanical transmission systems (10) of the type interpreting a first predetermined combination of parameters as a request or requirement for a direct shift to a predetermined default start ratio (GRDS) is provided. The control provides a predetermined series of actions by which the vehicle operator may manually select a new default start ratio such as, for example, by manipulation of shift selection device (1) displaceable in a first direction to select upshifts and in a second direction to select downshifts.
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Citations
24 Claims
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1. A method of controlling an automated mechanical change-gear transmission system (10) comprising a fuel throttle control (24), a fuel throttle-controlled engine (14), a multi-speed, change-gear mechanical transmission (12) having a lowest grouping of gear ratios (first through fifth), each suitable for start-from-stop operation and having a specific ratio within said lowest grouping of ratios determined to be the predetermined default start ratio (GRDS), a central processing unit (38) for receiving inputs and for processing same according to predetermined logic rules to issue command output signals to non-manually controlled operators including a transmission operator (34), said processing unit sensing system parameters indicative of a requirement for a shift directly into the default start ratio and effective to issue command output signals for a shift directly into the default start ratio, said method comprising:
providing a series of actions for operator manual selection of a new default start ratio (GRDS). - View Dependent Claims (2, 3, 4)
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5. A machine for controlling an automated mechanical change-gear transmission system (10) comprising a fuel throttle control (24), a fuel throttle-controlled engine (14), a multi-speed, change-gear mechanical transmission (12) having a lowest grouping of gear ratios (first through fifth), each suitable for start-from-stop operation and having a specific ratio within said lowest grouping of ratios determined to be the predetermined default start ratio, a central processing unit (38) for receiving inputs and for processing same according to predetermined logic rules to issue command output signals to non-manually controlled operators including a transmission operator (34), said processing unit sensing system parameters indicative of a requirement for a shift directly into the default start ratio and effective to issue command output signals for a shift into the default start ratio, said machine characterized by:
said logic rules including rules for providing a series of actions for operator manual selection of a new default start ratio (GRDS). - View Dependent Claims (6, 7, 8)
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9. A method of controlling an automated mechanical change-gear transmission system (10) comprising a fuel throttle control (24), a fuel throttle-controlled engine (14), a multi-speed, change-gear mechanical transmission (12) having a lowest grouping of gear ratios (first through fifth), each suitable for start-from-stop operation and having a specific ratio within said lowest grouping of ratios determined to be the predetermined default start ratio (GRDS), a manually operated shift selection lever (1) displaceable in a first direction to select upshifts and in a second direction to select downshifts, a central processing unit (38) for receiving input signals including signals indicative of operation of said selection lever and of a currently engaged ratio of the transmission and for processing same according to predetermined logic rules to issue command output signals to non-manually controlled operators including a transmission operator (34), said processing unit interpreting a first predetermined combination of operations of said manual shift selection lever and system parameters as a selection of a shift directly into the predetermined default start ratio, said method comprising:
interpreting a second predetermined combination of operations of said manual shift selection lever and system parameters as a request to select a new default start ratio. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A machine for controlling an automated mechanical change-gear transmission system (10) comprising a fuel throttle control (24), a fuel throttle-controlled engine (14), a multi-speed, change-gear mechanical transmission (12) having a lowest grouping of gear ratios (first through fifth), each suitable for start-from-stop operation and having a specific ratio within said lowest grouping of ratios determined to be the predetermined default start ratio (GRDS), a manually operated shift selection lever (1) displaceable in a first direction to select upshifts and in a second direction to select downshifts, a central processing unit (38) for receiving input signals including signals indicative of operation of said selection lever and of a currently engaged ratio of the transmission and for processing same according to predetermined logic rules to issue command output signals to non-manually controlled operators including a transmission operator (34), said processing unit interpreting a first predetermined combination of operations of said manual shift selection lever and system parameters as a selection of a shift directly into the predetermined default start ratio, said machine characterized by said logic rules including logic rules for:
interpreting a second predetermined combination of operations of said manual shift selection lever and system parameters as a request to select a new default start ratio. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
Specification