Monitoring unit state chart and a debounce logic
First Claim
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1. A method of logging faults in an electronic controlled internal combustion engine having an electronic control unit with memory, said electronic control unit comprising a motor control module in electronic communication with at least one sensor to provide data signals including vehicle operating conditions;
- said motor control module in electronic communication with a Common Powertrain Controller;
said Common Powertrain Controller further equipped with a fault manager for logging said faults, said method comprising;
sensing engine operating conditions and transmitting a data signal indicative of said engine operating conditions to said electronic control unit;
filtering said data signals from said sensor through a debounce logic;
said logic comprising a timer to measure time duration of an error in said data signal;
a recovery time for any deactivation of an error and a healing time for an inactive fault self deletion;
logging any faults after debounce filtering in memory in a fault table in a fault control module;
commanding said faults from said fault control memory up to 10 times per second to said Common Powertrain Controller and once per second to said motor control module; and
activating any alerts indicating said fault.
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Abstract
A method of logging faults in an electronic controlled internal combustion engine that passes any fault readings through a debounce logic to determine whether the fault indication is real.
26 Citations
2 Claims
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1. A method of logging faults in an electronic controlled internal combustion engine having an electronic control unit with memory, said electronic control unit comprising a motor control module in electronic communication with at least one sensor to provide data signals including vehicle operating conditions;
- said motor control module in electronic communication with a Common Powertrain Controller;
said Common Powertrain Controller further equipped with a fault manager for logging said faults, said method comprising;sensing engine operating conditions and transmitting a data signal indicative of said engine operating conditions to said electronic control unit; filtering said data signals from said sensor through a debounce logic;
said logic comprising a timer to measure time duration of an error in said data signal;
a recovery time for any deactivation of an error and a healing time for an inactive fault self deletion;logging any faults after debounce filtering in memory in a fault table in a fault control module; commanding said faults from said fault control memory up to 10 times per second to said Common Powertrain Controller and once per second to said motor control module; and activating any alerts indicating said fault. - View Dependent Claims (2)
- said motor control module in electronic communication with a Common Powertrain Controller;
Specification
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Current AssigneeDetroit Diesel Corporation (Mercedes-Benz Group AG)
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Original AssigneeDetroit Diesel Corporation (Mercedes-Benz Group AG)
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InventorsGolub, Tomislav I., Groer, Frank S.
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Primary Examiner(s)Cronin, Stephen K
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Assistant Examiner(s)Hoang, Johnny H
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Application NumberUS11/939,997Publication NumberTime in Patent Office874 DaysField of Search701102-104, 701111-112, 701114-115, 701/29, 701/31, 701 34- 35, 701/54, 701/87, 702/58, 702/183, 702/185, 123/479, 123/488, 602/74, 602/76, 602/77, 602/85, 602/86US Class Current701/115CPC Class CodesB60W 50/0205 Diagnosing or detecting fai...G07C 5/085 using electronic data carriers
