JPS6112918U

JPS6112918U - Lubricating oil cooling mechanism for water-cooled engines

Info

Publication number: JPS6112918U
Application number: JP9754484U
Authority: JP
Inventors: 敏松本; 寛高田; 敏満白沢
Original assignee: 日産ディーゼル工業株式会社
Priority date: 1984-06-28
Filing date: 1984-06-28
Publication date: 1986-01-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はこの考案の実施例の概略構成図、第２図〜第４
図は夫々同電繊弁によって形成される潤滑油の流れ方向
を余す概略断面図、第５図は同制御系統のブロック図、
第６図は同制御を実行するコントローラのフローチャー
ト、第７図は従来の，水冷エンジンの潤滑油冷却機構を
示す概略構成図、第８図は潤滑油の冷却すべき温度領域
を示す潤滑油温と冷却水温との関係図である。図において、２はオイルクーラ、４はオイルクーラ通過
通路、５はオイルクーラバイパス通路、６は電磁弁、７
はコントローラ、８は油温センサー、１０は水温センサ
ー、１１．１２は油圧センサー、Ｔｏは油温、ＴＡは限
界油、Ｔｗは水温、ΔＰＯは油圧差、ａは一定値である
。Figure 1 is a schematic configuration diagram of an embodiment of this invention, Figures 2 to 4
The figures are schematic cross-sectional views that leave the flow direction of lubricating oil formed by the electric fiber valves, and Figure 5 is a block diagram of the control system.
Fig. 6 is a flowchart of the controller that executes the same control, Fig. 7 is a schematic configuration diagram showing a conventional lubricating oil cooling mechanism for a water-cooled engine, and Fig. 8 is a lubricating oil temperature showing the temperature range in which lubricating oil should be cooled. FIG. In the figure, 2 is an oil cooler, 4 is an oil cooler passing passage, 5 is an oil cooler bypass passage, 6 is a solenoid valve, and 7 is an oil cooler passage.
8 is the controller, 8 is the oil temperature sensor, 10 is the water temperature sensor, 11.12 is the oil pressure sensor, To is the oil temperature, TA is the oil limit, Tw is the water temperature, ΔPO is the oil pressure difference, and a is a constant value.

Claims

[Scope of utility model registration request]

There is a passage for lubricating oil to pass through the oil cooler and a passage for bypassing the oil cooler, and a solenoid valve is installed in the lubricating oil passage.
The solenoid valve is operated by a control means to which a detection signal from an oil temperature detection means, a detection signal from a water temperature detection means, and a detection signal from oil pressure detection means provided on the inlet and outlet sides of the oil cooler are input. When the oil pressure difference between the inlet side and the outlet side is above a certain value, the oil temperature is lower than the limit oil temperature so that the lubricating oil flows into both the passage that passes through the oil cooler and the passage that bypasses the oil cooler. When the oil temperature is higher than the water temperature and the oil temperature is lower than the water temperature, the lubricating oil flows into the passage that passes through the oil cooler, and when the oil temperature is lower than the oil temperature limit and higher than the water temperature, the lubricating oil flows through the oil cooler. A lubricating oil cooling mechanism for a water-cooled engine characterized by controlling the lubricating oil to flow into a bypass passage.