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Jouve S.A., EPO - Publication - KB, TaggedPDF v1.27
EP-0647770-A2-19950412
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EP-0647770-A2-19950412
An engine valve control system of an internal combustion engine in which the valve stroke is controlled by varying timing and duration of electric signals sent to individually dedicated engine valve controlling means, comprises : a controller programmed to send variable electric control signals (512) to the said engine valve controlling means (64),said control signals duration comprising the algebraic sum of a basic signal duration (508) and a correction signal duration (510) means (504) for generating a basic signal duration determined by the controller as a function of engine operating conditions and being equal for all engine intake valves and equal for all engine exhaust valves; and means (500,502) for generating a correction signal predetermined for each of the engine valve controlling means as a measure of the extent the performance of each engine valve controlling means varies from a predetermined standard, said correction signal generating means being operative in timed sequence to supply to the controller said predetermined correction signal just prior to a respective engine valve controlling means being activated.
An engine valve control system of an internal combustion engine in which the valve stroke is controlled by varying timing and duration of electric signals sent to individually dedicated engine valve controlling means, comprises : a controller programmed to send variable electric control signals (512) to the said engine valve controlling means (64),said control signals duration comprising the algebraic sum of a basic signal duration (508) and a correction signal duration (510) means (504) for generating a basic signal duration determined by the controller as a function of engine operating conditions and being equal for all engine intake valves and equal for all engine exhaust valves; and means (500,502) for generating a correction signal predetermined for each of the engine valve controlling means as a measure of the extent the performance of each engine valve controlling means varies from a predetermined standard, said correction signal generating means being operative in timed sequence to supply to the controller said predetermined correction signal just prior to a respective engine valve controlling means being activated.
en
European Patent Office
EP0647770
EP 0647770
F01L 09/02
F02D 13/02
Hydraulically operated valve control system for an internal combustion engine
Hydraulically operated valve control system for an internal combustion engine - European Patent Office - EP 0647770 A2
Hydraulically operated valve control system for an internal combustion engine - European Patent Office - EP 0647770 A2
Adobe PDF Library 8.0
"EP0647770"; "EP 0647770"; "F01L 09/02"; "F02D 13/02"; "Hydraulically operated valve control system for an internal combustion engine"
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28
EP
0647770
A2
1995-04-12
94120028
1992-06-04
US
720115
1991-06-24
F01L 09/02
F02D 13/02
FORD MOTOR COMPANY LIMITED
FORD WERKE A.G.
FORD FRANCE S. A.
Schechter, Michael Moses
Messulam, Alec Moses
Hydraulically operated valve control system for an internal combustion engine
Hydraulische Ventilsteuervorrichtung für eine Brennkraftmaschine
Hydraulically operated valve control system for an internal combustion engine
Dispositif de commande hydraulique de soupapes pour un moteur à combustion interne
An engine valve control system of an internal combustion engine in which the valve stroke is controlled by varying timing and duration of electric signals sent to individually dedicated engine valve controlling means, comprises : a controller programmed to send variable electric control signals (512) to the said engine valve controlling means (64),said control signals duration comprising the algebraic sum of a basic signal duration (508) and a correction signal duration (510) means (504) for generating a basic signal duration determined by the controller as a function of engine operating conditions and being equal for all engine intake valves and equal for all engine exhaust valves; and means (500,502) for generating a correction signal predetermined for each of the engine valve controlling means as a measure of the extent the performance of each engine valve controlling means varies from a predetermined standard, said correction signal generating means being operative in timed sequence to supply to the controller said predetermined correction signal just prior to a respective engine valve controlling means being activated.
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