JPS61155626U

JPS61155626U -

Info

Publication number: JPS61155626U
Application number: JP3746285U
Authority: JP
Priority date: 1985-03-18
Filing date: 1985-03-18
Publication date: 1986-09-26

Description

[Brief explanation of drawings]

第１図は本考案の概念図、第２図は本考案の一
実施例を示す断面図、第３図〜第５図はその作動
特性を示す説明図、第６図はその制御動作のフロ
ーチヤート、第７図は本考案の他の実施例の作動
特性を示す説明図、第８図は従来例の断面図、第
９図はその部分平面図である。１：ピストン、５：シリンダブロツク、１１：
オイルジエツト、１６：油路、２０：弁手段、２
１：回転数検出手段、２２：負荷検出手段、２３
：暖機状態検出手段、２４―ａ：第１の制御手段
、２４―ｂ：第２の制御手段、２５：記憶手段、
２８：切換手段、３１〜４０：第１の制御手段に
対応するステツプ、４５〜５７：第２の制御手段
に対応するステツプ、４１〜４４：切換手段に対
応するステツプ。 Figure 1 is a conceptual diagram of the present invention, Figure 2 is a sectional view showing an embodiment of the present invention, Figures 3 to 5 are explanatory diagrams showing its operating characteristics, and Figure 6 is the flow of its control operation. FIG. 7 is an explanatory diagram showing the operating characteristics of another embodiment of the present invention, FIG. 8 is a sectional view of the conventional example, and FIG. 9 is a partial plan view thereof. 1: Piston, 5: Cylinder block, 11:
Oil jet, 16: Oil path, 20: Valve means, 2
1: Rotation speed detection means, 22: Load detection means, 23
: warm-up state detection means, 24-a: first control means, 24-b: second control means, 25: storage means,
28: switching means; 31-40: steps corresponding to the first control means; 45-57: steps corresponding to the second control means; 41-44: steps corresponding to the switching means.

Claims

[Scope of utility model registration request]

In this device, an oil jet is provided in the cylinder block toward the lower surface of the piston, and oil is injected from the oil jet to cool the piston.A valve means for opening and closing the oil passage communicating with the oil jet, and engine speed, load, and temperature control are provided. means for detecting each engine state; a storage means for storing a cooling oil injection pattern according to the operating state of the engine; and oil cooling based on a comparison between the detection results of each of the detection means and the injection pattern. A first control means that determines whether or not to perform oil cooling, a second control means that determines a pattern of intermittent injection of cooling oil, and a case where oil cooling is performed based on the determination result of the first control means. outputs a signal that causes the valve means to open continuously; when oil cooling is not performed, a signal that causes the valve means to open intermittently according to a pattern determined by the second control means; A piston oil cooling control device, characterized in that it is equipped with a switching means for outputting.