Method and device for ascertaining the state of a gear box, in particular in a motor vehicle
OwnerJean-Paul Sibeudinventor
Life of this patent
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Abstract
A system for detecting the state of a gear box. Sliding gear selector rods control gear shift forks, and carry notches into which bars may fall. Each of such bars actuates an electrical device for emitting a binary bit. All of the binary bits together form a coded element the reading of which is made with reference to a binary standard to determine the position of the selector rods, which in turn determines the gear ratio or state of the gear box.
Claims10
A method for detecting the state of a gear box, comprising the steps of:
- controlling the various gear ratios of said gear box by means of movable members;
- generating binary bits in response to the relative positions of said movable members, all of said binary bits together constituting a coded element;
- detecting said coded element with reference to a binary standard;
- and
- detecting the state of said gear box by determining the instantaneous position of said movable members by such detection of said coded element with reference to said binary standard.
A system for performing a method for detecting the state of a gear box including the steps of controlling the various gear ratios of said gear box by means of movable members, generating binary bits in response to the relative positions of said movable members, all of said binary bits together constituting a coded element, detecting said coded element with reference to a binary standard, and detecting the state of said gear box by determining the instantaneous position of said movable members by such detection of said coded element with reference to said binary standard, said system comprising, in combination:
- first means for controlling the various gear ratios of said gear box;
- second means for generating said binary bits in response to the relative positions of said first means, all of said binary bits together constituting said coded element;
- third means for detecting said coded element with reference to said binary standard;
- and
- fourth means for detecting the state of said gear box by determining the instantaneous position of said movable means by such detection of said coded element with reference to said binary standard.
A detection device for carrying into effect a method for detecting the state of a gear box including the steps of controlling the various gear ratios of said gear box by means of movable members, generating binary bits in response to the relative positions of said movable members, all of said binary bits together constituting a coded element, detecting said coded element with reference to a binary standard, and detecting the state of said gear box by determining the instantaneous position of said movable members by such detection of said coded element with reference to said binary standard, and wherein the various forward, reverse and neutral gear ratios are controlled by movable members such as sliding rods, and a binary logical counting code is used for detecting at every moment the position of the whole of said movable members so that each of the possible states of the gear box is characterized by an element of a binary coding standard, all the elements of which have the same number of bits, said detection device including detectors mounted on the casing of said gear box, the number of said detectors being equal to that of said movable members such as sliding rods, while ach of said detectors supplies at every moment a "0" bit or a "1" bit, all of said bits together forming a coded element the reading of which is then made with reference to a binary standard.
Dependencies are inferred from the claim text.