Semi-automatic mechanical transmission control display and fault indicator
First Claim
1. A method of (i) displaying the presence and (ii) the identity of a sensed vehicle fault condition in a vehicle equipped with mechanical change gear transmission (12), a central processing unit (38) for receiving input signals indicative of transmission input shaft (32) and output shaft (36) rotational speeds, and for processing same according to predetermined logic rules;
- to determine the currently engaged gear ratio of said transmission and to determine permissibly engaged gear ratios of said transmission under sensed vehicle operating conditions;
and to issue command output signals to a display (2) for displaying the currently engaged gear ratio and also displaying an indication of the permissibly engaged gear ratios, said displaying including;
a first section (302'"'"'") displaying alpha-numerical information indicative of the currently engaged gear ratio;
a second display section (302'"'"') displaying information indicative of the highest permissible engaged gear ratio; and
,a third display section (302") displaying information indicative of the lowest permissible engaged gear ratio, said method characterized by;
processing said input signals to sense the presence or absence of a fault condition;
upon sensing a fault condition, (i) assigning a predetermined code to the sensed fault, (ii) causing at least one of said first, second and third display sections to display information indicative of the presence of a fault and (iii) causing said first section to display the assigned code.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmission system (10) including a control display (2, 302) is provided. The control display comprised of three sections, a currently engaged gear ratio section (2'"'"'") a maximum permissible consecutive upshift indicating section (2'"'"') and a maximum permissible consecutive downshift indicating section (2"). The central processing unit (38) includes circuitry and logic rules to process input signals to determine the currently permissible gear ratios and will indicate said gear ratios, in the form of maximum permissible upshifts and downshifts, at said display. The central processing unit also includes circuitry and logic rules to sense the existence of a fault condition, to assign a predetermined code ("18") thereto and to issue command output signals to the display to cause the second and third sections to assume a fault condition indicating display and to cause said first section to display to assigned code.
25 Citations
7 Claims
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1. A method of (i) displaying the presence and (ii) the identity of a sensed vehicle fault condition in a vehicle equipped with mechanical change gear transmission (12), a central processing unit (38) for receiving input signals indicative of transmission input shaft (32) and output shaft (36) rotational speeds, and for processing same according to predetermined logic rules;
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to determine the currently engaged gear ratio of said transmission and to determine permissibly engaged gear ratios of said transmission under sensed vehicle operating conditions; and to issue command output signals to a display (2) for displaying the currently engaged gear ratio and also displaying an indication of the permissibly engaged gear ratios, said displaying including; a first section (302'"'"'") displaying alpha-numerical information indicative of the currently engaged gear ratio; a second display section (302'"'"') displaying information indicative of the highest permissible engaged gear ratio; and
,a third display section (302") displaying information indicative of the lowest permissible engaged gear ratio, said method characterized by; processing said input signals to sense the presence or absence of a fault condition; upon sensing a fault condition, (i) assigning a predetermined code to the sensed fault, (ii) causing at least one of said first, second and third display sections to display information indicative of the presence of a fault and (iii) causing said first section to display the assigned code. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification