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出願の表示

1. US20050211207 - Variable valve timing control device of internal combustion engine

官庁 アメリカ合衆国
出願番号 10510765
出願日 12.10.2004
公開番号 20050211207
公開日 29.09.2005
特許番号 7107951
特許付与日 19.09.2006
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
F01L 1/344
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
344クランク軸とカム軸間の角度関係を変えるもの,例.螺旋形状歯車を用いるもの
F01L 1/352
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
344クランク軸とカム軸間の角度関係を変えるもの,例.螺旋形状歯車を用いるもの
352かさ歯車または遊星歯車装置を用いるもの
F02D 13/02
F機械工学;照明;加熱;武器;爆破
02燃焼機関;熱ガスまたは燃焼生成物を利用する機関設備
D燃焼機関の制御
13吸気または排気弁の作動特性,例.タイミング,の変更による機関出力の制御
02機関運転中のもの
CPC
F02D 13/0238
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
13Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02during engine operation
0223Variable control of the intake valves only
0234changing the valve timing only
0238by shifting the phase, i.e. the opening periods of the valves are constant
F01L 1/024
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
024Belt drive
F01L 1/34
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
F01L 1/352
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
352using bevel or epicyclic gear
F01L 13/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
02for reversing
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 Urushihata Haruyuki
Iida Hisashi
代理人 Nixon & Vanderhye P.C.
優先権情報 2002310579 25.10.2002 JP
2002320612 05.11.2002 JP
2002344892 28.11.2002 JP
2003045392 24.02.2003 JP
発明の名称
(EN) Variable valve timing control device of internal combustion engine
要約
(EN)

A required valve timing change rate Vreq is calculated so as to make a deviation D between a target valve timing VTtg and an actual valve timing VT small and then a required speed difference DMCRreq between a motor 26 and a camshaft 16 is calculated on a basis of the required valve timing change rate Vreq. When the deviation D is larger than a predetermined value, a required motor speed Rmreq is calculated by adding the required speed difference DMCRreq to a camshaft speed RC and a motor control value is calculated so as to control the motor speed RM to the required motor speed Rmreq. When the deviation D is not larger than the predetermined value, the camshaft speed RC is set as the required motor speed Rmreq and the motor control value is calculated so as to control the motor speed RM to the camshaft speed RC.