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1. WO2006048986 - TAPPET CLEARANCE AUTOMATIC ADJUSTING DEVICE AND ADJUSTING METHOD

Publication Number WO/2006/048986
Publication Date 11.05.2006
International Application No. PCT/JP2005/018195
International Filing Date 30.09.2005
Chapter 2 Demand Filed 05.09.2006
IPC
F01L 1/46 2006.1
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
46Component parts, details, or accessories, not provided for in preceding subgroups
CPC
F01L 1/08
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
04by means of cams, camshafts, cam discs, eccentrics or the like
08Shape of cams
F01L 1/181
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
12Transmitting gear between valve drive and valve
18Rocking arms or levers
181Centre pivot rocking arms
F01L 1/20
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
20Adjusting or compensating clearance
F01L 1/46
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
46Component parts, details, or accessories, not provided for in preceding subgroups
F01L 2303/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2303Manufacturing of components used in valve arrangements
F01L 2303/01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2303Manufacturing of components used in valve arrangements
01Tools for producing, mounting or adjusting, e.g. some part of the distribution
Applicants
  • 本田技研工業株式会社 HONDA MOTOR CO., LTD. [JP]/[JP] (AllExceptUS)
  • 立野康幸 TACHINO, Yasuyuki [JP]/[JP] (UsOnly)
  • 宮嶋俊幸 MIYAJIMA, Toshiyuki [JP]/[JP] (UsOnly)
  • 津吉智明 TSUYOSHI, Tomoaki [JP]/[JP] (UsOnly)
Inventors
  • 立野康幸 TACHINO, Yasuyuki
  • 宮嶋俊幸 MIYAJIMA, Toshiyuki
  • 津吉智明 TSUYOSHI, Tomoaki
Agents
  • 千葉剛宏 CHIBA, Yoshihiro
Priority Data
2004-32199505.11.2004JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) TAPPET CLEARANCE AUTOMATIC ADJUSTING DEVICE AND ADJUSTING METHOD
(FR) DISPOSITIF ET PROCEDE DE RATTRAPAGE AUTOMATIQUE DU JEU DU POUSSOIR
(JA) タペットクリアランス自動調整装置及び調整方法
Abstract
(EN) A tappet clearance automatic adjusting device (10) comprising an adjusting unit (34) for advancing/retracting an adjust screw (18) from the forward end of a rocker arm (22) and adjusting the projection amount, a torque detecting section (38) for detecting the torque by rotating the adjust screw (18), and a control mechanism section (54) for controlling the adjusting unit (34) based on a torque value T measured at the torque detecting section (38). The control mechanism section (54) starts retracting the adjust screw (18) when a valve (14) is opened and continuously measures the torque value T obtained when the valve (14) is closed. A position, corresponding to time t6 when variation in the filtering value P obtained by smoothing the torque value T through moving average is a threshold value K4 or smaller, is detected as a reference point and the adjust screw (18) is retracted from the reference point by a set amount.
(FR) L'invention concerne un dispositif de rattrapage automatique du jeu du poussoir (10) qui comprend une unité de rattrapage (34) permettant de visser/dévisser une vis de rattrapage (18) depuis l'extrémité avant d'un culbuteur (22) et de régler le taux d'avancée, une section de détection de couple (38) qui permettant de détecter le couple en faisant tourner la vis de réglage (18) et une section de mécanisme de commande (54) permettant de commander l'unité de rattrapage (34) sur la base d'une valeur de couple T mesurée par la section de détection de couple (38). La section de mécanisme de commande (54) commence à dévisser la vis de rattrapage (18) lorsqu'une soupape (14) s'ouvre et mesure en continu la valeur de couple T obtenue lorsque la soupape (14) se ferme. Une position, correspondant au temps t6 lorsque la variation de la valeur de filtrage P obtenue en arrondissant la valeur de couple T par la moyenne mobile est une valeur limite K4 ou inférieure, est détectée comme point de référence et la vis de rattrapage (18) est dévissée du point de référence d'une quantité déterminée.
(JA)  タペットクリアランス自動調整装置(10)は、ロッカーアーム(22)先端からアジャストスクリュー(18)を進退させて突出量を調整する調整ユニット(34)と、アジャストスクリュー(18)を回転させるトルクを検出するトルク検出部(38)と、トルク検出部(38)が計測するトルク値Tに基づいて、調整ユニット(34)を制御する制御機構部(54)とを有する。制御機構部(54)は、バルブ(14)を開いた状態からアジャストスクリュー(18)を後退させてバルブ(14)が閉じる際のトルク値Tを連続的に計測する。トルク値Tを移動平均により平滑化したフィルタリング値Pの変化が閾値K4以下となる時刻t6に対応した位置を基準点として検出し、アジャストスクリュー(18)を、基準点よりも設定量だけ後退させる。
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