JPH0419610U

JPH0419610U -

Info

Publication number: JPH0419610U
Application number: JP6083790U
Authority: JP
Priority date: 1990-06-08
Filing date: 1990-06-08
Publication date: 1992-02-19
Anticipated expiration: 2005-06-08
Also published as: JP2525238Y2

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は
一部を破断して示したエンジンの部分平面図、第
２図は第１図の−線切断線に沿つて見た断面
図、第３図は第１図の−切断線に沿つて見た
概略拡大断面図、第４図は第１図の−切断線
に沿つて見た作動状態における電磁ソレノイド弁
の一部を切り欠いて示した要部拡大側面図、第５
図は第４図の−線切断線に沿つて見た断面図
、第６図は非作動状態における電磁ソレノイド弁
の一部を切り欠いて示した要部拡大側面図である
。２……シリンダヘツド、４……第１カムシヤフ
ト、５……第２カムシヤフト、１５……排気バル
ブ、１７……吸気バルブ、１８……上部空間、１
９……シリンダヘツドカバー、２６……可変バル
ブタイミング機構、４５……電磁ソレノイド弁、
５０……ソレノイドコイル部、４２……供給通路
、４７……導入通路、４８……排出通路、５５…
…弁体、５８……リリーフ通路。 The drawings show an embodiment of the present invention; FIG. 1 is a partial plan view of the engine partially cut away; FIG. 2 is a sectional view taken along the - line cutting line in FIG. 1; Fig. 3 is a schematic enlarged sectional view taken along the - section line in Fig. 1, and Fig. 4 is a partially cutaway view of the electromagnetic solenoid valve in the operating state, taken along the - section line in Fig. 1. Enlarged side view of main parts shown, No. 5
This figure is a sectional view taken along the - line cutting line in FIG. 4, and FIG. 6 is an enlarged side view of the main part of the electromagnetic solenoid valve in a non-operating state, with a portion thereof cut away. 2... Cylinder head, 4... First camshaft, 5... Second camshaft, 15... Exhaust valve, 17... Intake valve, 18... Upper space, 1
9... Cylinder head cover, 26... Variable valve timing mechanism, 45... Electromagnetic solenoid valve,
50...Solenoid coil section, 42...Supply passage, 47...Introduction passage, 48...Discharge passage, 55...
...Valve body, 58...Relief passage.

Claims

[Claims for Utility Model Registration] (1) A pair of camshafts that open and close the intake and exhaust valves are disposed in the upper space of the cylinder head covered by the cylinder head cover, and at least one of the camshafts opens and closes the intake and exhaust valves. D equipped with a hydraulically operated variable valve timing mechanism that changes the phase relative to the crankshaft.
A cylinder head of an OHC engine, in which an electromagnetic solenoid valve for controlling the supply and discharge of hydraulic oil to and from the variable valve timing mechanism is disposed between a pair of camshafts located at the upper part of the cylinder head, and A cylinder head for a DOHC engine equipped with a variable valve timing mechanism, characterized in that at least a solenoid coil portion of the solenoid valve is mounted so as to be exposed in the upper space of the cylinder head. (2) A pair of camshafts are installed at the top of the cylinder head to open and close the intake and exhaust valves, respectively, and at least one of the camshafts is equipped with a hydraulically operated variable valve timing mechanism that changes the phase relative to the crankshaft. A cylinder head of a DOHC engine,
An electromagnetic solenoid valve that controls the supply and discharge of hydraulic oil to and from the variable valve timing mechanism is attached to the cylinder head, and the cylinder head includes an introduction passage for the hydraulic oil and a supply passage that guides the hydraulic oil to the timing mechanism. and a discharge passage for draining the supply passage, and a valve element provided in the electromagnetic solenoid valve that communicates and shuts off the supply passage with the introduction passage, drains the hydraulic oil in the supply passage. A cylinder head for a DOHC engine equipped with a variable valve timing mechanism, characterized in that a passage is formed to escape to the exhaust passage.