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1. US20090151671 - Controller for vane-type variable timing adjusting mechanism

官庁 アメリカ合衆国
出願番号 12065366
出願日 23.04.2007
公開番号 20090151671
公開日 18.06.2009
特許番号 7845321
特許付与日 07.12.2010
公報種別 B2
IPC
F01L 1/34
F機械工学;照明;加熱;武器;爆破
01機械または機関一般;機関設備一般;蒸気機関
L周期的に作動する機械または機関用弁
1弁装置または弁配列,例.リフト弁装置
34開き時間を変えることなく弁のタイミングを変える装置を設けることを特徴とするもの
CPC
F01L 1/3442
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
3442using hydraulic chambers with variable volume to transmit the rotating force
F01L 1/022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
02Valve drive
022Chain drive
F01L 2001/34426
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
3442using hydraulic chambers with variable volume to transmit the rotating force
34423Details relating to the hydraulic feeding circuit
34426Oil control valves
F01L 2001/34469
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
3442using hydraulic chambers with variable volume to transmit the rotating force
3445Details relating to the hydraulic means for changing the angular relationship
34453Locking means between driving and driven members
34469Lock movement parallel to camshaft axis
F01L 2001/34479
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
3442using hydraulic chambers with variable volume to transmit the rotating force
3445Details relating to the hydraulic means for changing the angular relationship
34479Sealing of phaser devices
F01L 2800/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2800Methods of operation using a variable valve timing mechanism
出願人 Denso Corporation
発明者 Kobaishi Tokuyasu
代理人 Nixon &; Vanderhye PC
優先権情報 2006121419 26.04.2006 JP
発明の名称
(EN) Controller for vane-type variable timing adjusting mechanism
要約
(EN)

One-way valves (30, 31) are provided in a hydraulic supply passage (28) in an advance chamber (18) and a hydraulic supply passage (29) in a retard chamber (19) respectively for preventing reverse flow of oil from each chamber (18, 19) and drain oil passages (32, 33) bypassing the one-way valves respectively disposed in the hydraulic supply passages (28, 29) of the respective hydraulic chambers (18, 19) are provided to be in parallel therewith. Drain switching valves (34, 35) are disposed in the respective drain oil passages (32, 33). A hydraulic control valve (21) for controlling a hydraulic pressure supplied to the advance chamber (18) and the retard chamber (19) includes integrally a drain switching control function (38) for controlling a hydraulic pressure supplied to the respective drain switching valves (34, 35). A point where a VCT response speed rapidly changes by switching opening/closing of the drain switching valves (34, 35) is learned to improve a control characteristic in the vicinity of the rapidly changing point of the VCT response speed.