Patent EP0420443A1 successfully refreshed from Google Patents.
EP0420443A1
Expired / Lapsed
EP
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Engine valve control during transmission shifts
Assignee: Ford-Werke GmbH
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Filing: 1990-09-11
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Granted: —
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Expires: 2010-09-11
Abstract
Abstract An apparatus for controlling a drivetrain during an automatic transmission shift, the apparatus comprising, a plurality of actuation means (62,64,66,68,92,94,96,98) each coupled to an individual engine valve for electronically controlling valve lift in relation to a value of a valve command signal, transmission control means (124) for providing a shift command correlated with the automatic transmission shift, and control means (58) responsive to said shift command for providing said valve command signal having a value related to a desired reduction in valve lift during the automatic transmission shift.
Inventors
- 👤 Michael George Aimone
- 👤 Julian Anthony Lorusso
- 👤 William Emil Tobler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:35
CPC Classifications
F; F02; F02D; F02D13/00; F02D13/02; F02D13/0203; F02D13/0207; B; B60; B60W; B60W10/00; B60W10/04; B60W10/10; B60W10/11; B60W30/00; B60W30/18; B60W30/1819; F01; F01L; F01L9/00; F01L9/10; F02D13/0253; F02D41/00; F02D41/0002; F02D41/02; F02D41/021; F02D41/0215; F02D41/023; F02D2041/001; F02D2200/00; F02D2200/02; F02D2200/10; F02D2200/101; F16; F16H; F16H63/00; F16H63/40; F16H63/50; F16H63/502; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
88 words
An apparatus for controlling a drivetrain during an automatic transmission shift, the apparatus comprising, a plurality of actuation means (62,64,66,68,92,94,96,98) each coupled to an individual engine valve for electronically controlling valve lift in relation to a value of a valve command signal, transmission control means (124) for providing a shift command correlated with the automatic transmission shift, and control means (58) responsive to said shift command for providing said valve command signal having a value related to a desired reduction in valve lift during the automatic transmission shift.
Claim 2
Independent Claim
88 words
An apparatus for controlling a drivetrain during an automatic transmission shift, the apparatus comprising, a plurality of actuation means (62,64,66,68,92,94,96,98) each coupled to an individual engine valve for electronically controlling valve lift in relation to a value of a valve command signal, transmission control means (124) for providing a shift command correlated with the automatic transmission shift, and control means (58) responsive to said shift command for providing said valve command signal having a value related to a desired reduction in valve lift during the automatic transmission shift.
Claim 3
Dependent Claim
17 words
An apparatus as claimed in claim 1, wherein said control means is also responsive to engine speed.
Claim 4
Dependent Claim
17 words
An apparatus as claimed in claim 1, wherein said control means is also response to engine load.
Claim 5
Dependent Claim
20 words
An apparatus as claimed in claim 1, wherein each of said actuation means is coupled to each engine intake valve.
Claim 6
Dependent Claim
28 words
An apparatus as claimed in claim 1, wherein each engine in ake valve and each engine exhaust valve is coupled to a separate one of said actuation means.
Claim 7
Independent Claim
77 words
An apparatus as claimed in any one of the preceding claims, including a clutch controller for hydraulically coupling a clutch plate to a friction element in relation to a pressure command, said control means being responsive to said shift command for providing said valve command to reduce valve lift during the automatic transmission shift and for providing said pressure command to reduce said coupling between said clutch plate and said friction element during the automatic transmission shift.
Claim 8
Dependent Claim
21 words
An apparatus as claimed in claim 6, further comprising a hydraulic actuator for coupling said clutch plate to said friction element.
Claim 9
Dependent Claim
25 words
An apparatus as claimed in claim 7, wherein said clutch controller provides a plurality of said pressure commands to a plurality of said hydraulic actuators.
Claim 10
Independent Claim
146 words
An apparatus for controlling a drivetrain during an automatic transmission shift, comprising a source of pressurised hydraulic fluid, a plurality of actuation means each coupled to said hydraulic fluid source and each coupled to an individual engine valve for electronically controlling valve lift, said actuation means comprising a hydraulically operated piston coupled to each of said engine valves, an electronically actuated supply valve response to a first signal and coupled between said hydraulically operated piston and said source of hydraulic fluid, and an electronically actuated drain valve responsive to a second signal and coupled between said hydraulically operated piston and said source of hydraulic fluid, transmission control means for providing a shift command correlated with the automatic transmission shift, and control means responsive to said shift command for providing said first signal and said second signal to appropriately reduce valve lift during said automatic transmission shift.
Claim 11
Independent Claim
146 words
An apparatus for controlling a drivetrain during an automatic transmission shift, comprising a source of pressurised hydraulic fluid, a plurality of actuation means each coupled to said hydraulic fluid source and each coupled to an individual engine valve for electronically controlling valve lift, said actuation means comprising a hydraulically operated piston coupled to each of said engine valves, an electronically actuated supply valve response to a first signal and coupled between said hydraulically operated piston and said source of hydraulic fluid, and an electronically actuated drain valve responsive to a second signal and coupled between said hydraulically operated piston and said source of hydraulic fluid, transmission control means for providing a shift command correlated with the automatic transmission shift, and control means responsive to said shift command for providing said first signal and said second signal to appropriately reduce valve lift during said automatic transmission shift.
Claim 12
Dependent Claim
22 words
An apparatus as claimed in claim 9, further comprising a first check valve connected in parallel with said electronically actuated supply valve.
Claim 13
Dependent Claim
22 words
An apparatus as claimed in claim 9, further comprising a second check valve connected in parallel with said electronically actuated drain valve.
Claim 14
Independent Claim
169 words
An apparatus for controlling a drivetrain during a shift of an automatic transmission having a plurality of hydraulically operated clutches coupled to the engine, comprising, a plurality of actuation means each coupled to an individual engine valve for electronically controlling valve lift in relation to a command signal, said actuation means comprising a hydraulically operated piston coupled to each of said engine valves and an electronically actuated valve responsive to said command signal coupled between said hydraulically operated piston and a source of pressurised hydraulic fluid, coupling means for hydraulically coupling the clutches in proportion to a value of a pressure command signal, transmission control means for providing a shift command correlated with the automatic transmission shift, valve control means responsive to said shift command for providing said command signal in relation to a desired reduction in valve lift during the automatic transmission shift, and clutch control means responsive to said shift command for providing said pressure command to control coupling between the clutches during the automatic transmission shift.
Claim 15
Independent Claim
169 words
An apparatus for controlling a drivetrain during a shift of an automatic transmission having a plurality of hydraulically operated clutches coupled to the engine, comprising, a plurality of actuation means each coupled to an individual engine valve for electronically controlling valve lift in relation to a command signal, said actuation means comprising a hydraulically operated piston coupled to each of said engine valves and an electronically actuated valve responsive to said command signal coupled between said hydraulically operated piston and a source of pressurised hydraulic fluid, coupling means for hydraulically coupling the clutches in proportion to a value of a pressure command signal, transmission control means for providing a shift command correlated with the automatic transmission shift, valve control means responsive to said shift command for providing said command signal in relation to a desired reduction in valve lift during the automatic transmission shift, and clutch control means responsive to said shift command for providing said pressure command to control coupling between the clutches during the automatic transmission shift.
Claim 16
Dependent Claim
41 words
An apparatus as claimed in claim 12, further comprising a torque controller responsive to said shift command and an indication of engine load and an indication of engine speed for controlling both said valve control means and said clutch control means.
Claim 17
Independent Claim
77 words
A method for controlling a drivetrain during an automatic transmission shift, comprising the steps of, electronically controlling valve lift in relation to a value of a valve command signal by a plurality of electronically responsive hydraulic actuators each coupled to an individual engine valve for providing a shift command correlated with the automatic transmission shift, and providing said valve command signal having a value related to a desired reduction in valve lift during the automatic transmission shift.
Claim 18
Independent Claim
77 words
A method for controlling a drivetrain during an automatic transmission shift, comprising the steps of, electronically controlling valve lift in relation to a value of a valve command signal by a plurality of electronically responsive hydraulic actuators each coupled to an individual engine valve for providing a shift command correlated with the automatic transmission shift, and providing said valve command signal having a value related to a desired reduction in valve lift during the automatic transmission shift.
Claim 19
Dependent Claim
22 words
A method as claimed in claim 14, wherein said step of providing said valve command signal is also responsive to engine speed.
Claim 20
Dependent Claim
22 words
An apparatus as claimed in claim 14, wherein said step of providing said valve command signal is also responsive to engine load.
References Cited (Backward Citations)
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