JPH04107424U - oil pressure regulator - Google Patents

Abstract

(57) [Summary] [Objective] To provide an oil pressure regulating device that does not require a large force to regulate the pressure of oil supplied to an engine and can be compactly assembled. [Structure] A valve holding cylinder 5 that slidably holds the valve body 6 and has a relief hole 12 in its sliding range so that the top 6A side of the valve body 6 communicates with the main gallery 2 can be moved to the cylinder part 3. The valve holding cylinder 5 is moved from the outside by an actuator 10, and the relief hole 12 is vertically displaced by the movement, thereby making it possible to adjust the hydraulic pressure at the time of relief.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an oil pressure regulating device, and more specifically, to a lubricating device for vehicle engines, etc. The present invention relates to an oil pressure adjustment device that can control the pressure of oil according to operating conditions.

0002

[Conventional technology]

As a conventional oil pressure regulating device of this type, for example, There is one disclosed in Japanese Patent No. 510. This item is placed inside the sleeve of the main unit. It has a movable spool supported by a spring, and the other end of the spring inside the sleeve has this movable spool supported by a spring. A cam means is incorporated which allows the position of the other end of the spring to be moved within the sleeve. By changing the set position of the spring through cam means, the set pressure of the oil can be changed. It is configured as follows. The cam means is externally controlled by a controller. Elements related to engine operating conditions are input to the controller. It has become so.

0003

[Problem that the idea aims to solve]

However, in the conventional oil pressure regulating device as described above, the movable spool The set length of the spring is varied via cam means within the sleeve to adjust the operating pressure of the spring. Because it is configured so that the hydraulic pressure applied to the movable spool and the spring force of the spring are A large driving force is required to move the other end of the spring against both. Also, The drive mechanism requires space around the sleeve, and the overall size of the device increases. There was a problem.

0004 The purpose of this invention is to focus on such conventional problems and to solve them. It is possible to adjust the pressure of oil supplied to the engine without requiring much force, and Oil pressure adjustment that does not require a large space for the drive mechanism and can be organized compactly The goal is to provide equipment.

[0005]

[Means to solve the problem]

To achieve this objective, the present invention provides a The valve body is moved against the spring force according to changes in oil pressure, and the main gallery is released. In an oil pressure regulating device that can communicate with a valve passage, the valve body is slidably held. The valve body has a relief hole in the sliding range, and the top side of the valve body is connected to the main gap. A valve holding cylinder that communicates with the valve and the valve holding cylinder are slidably fitted, and the fitting part A cylinder part having a relief passage and a cylinder part for moving the valve holding cylinder from the outside. an actuator, the actuator controls the operating state of the engine. The position of the relief hole is adjusted by moving the valve holding cylinder according to the relief passage. The hydraulic pressure at the time of relief by the valve body can be adjusted by displacing it within a range corresponding to the road. It is characterized by being adjustable.

[0006]

[Effect]

According to the present invention, the actuator moves the valve holding cylinder to the operating position to release the valve. By changing the position of the relief hole to the safety passage, the oil pressure at the time of relief is controlled by the engine operating condition. It can be optimally adjusted depending on the situation.

[0007]

【Example】

Embodiments of the present invention will be specifically described below with reference to the drawings.

[0008] FIG. 1 shows an embodiment of the present invention. Here, 1 is a housing in which the device is provided; 2 is the main gallery in housing 1, 3 is a part of the oil from main gallery 2 4 is a relief passage that opens into the cylinder part 3. It is. 5 is slidably fitted into such a cylinder portion 3 from the main gallery 82 side. The screws are inserted into the stepped part 5B of the inner cylinder part 5A in a hydraulic state where there is no need to release oil. A member that keeps the top 6A of the tongue-shaped valve body 6 in contact (hereinafter referred to as a valve holding cylinder) ), 7 is a support spring for the valve body 6. Note that a liquid-tight plastic plate is provided at the lower end of the cylinder part 3. The end of the support spring 7 is held in place by a screw 8.

[0009] Furthermore, the valve holding cylinder 5 is slidably fitted to the cylinder part 3, A rod portion 9 provided at one end extends outward from the housing 1 while maintaining liquid tightness. The actuator 10 displaces the valve holding cylinder 5 along the cylinder part 3. can be done. 11 is installed in the part of the valve holding cylinder 5 that corresponds to the main gallery 2. The cut oil passage hole 12 is bored at a position corresponding to the relief passage 4 of the valve holding cylinder 5. This is a relief hole. Note that this relief hole 12 is provided in the valve holding cylinder 5 as described below. According to the operation, the position will be displaced up and down with respect to the relief passage 4, so the position The opening 4A of the relief passage 4 is arranged upwardly along the cylinder part 3 to accommodate the displacement of It is formed wide downward. In addition, 6B is a back pressure relief hole provided in the valve body 6. be.

0010 The oil pressure regulating device configured in this manner is equipped with a control circuit (not shown). The vertical position of the valve holding cylinder 5 inside the cylinder 3 is controlled by the actuator 10 that has been installed. be done. That is, the actuator 10 receives an error detected from an engine (not shown). Regardless of operating conditions such as engine rotation speed N, load condition L, lubricating oil temperature T and oil pressure P, etc. The element is input. Therefore, the actuator 10 is based on these elements. , Judgment to what degree the pressure of oil sent out from main gallery 2 should be controlled The valve holding member 5 is driven based on. Note that the valve holding member 5 is controlled as a result of driving. The hydraulic pressure is fed back to the actuator 10 again.

[0011] Now, for example, the oil pressure P of the oil sent from main gallery 2 to the engine is If the temperature is too high for the operating condition at that time, the actuator 10 It acts to pull the object upward. Therefore, this forms the valve holding cylinder 5. The relief hole 12 is moved upward, and the relief hole 12 is moved upward. This speeds up the action and allows relief to occur under lower oil pressure conditions. Also, the reverse If the oil pressure P is too low for the operating condition at that time, actuator 1 0 pushes the valve holding cylinder 5 downward. As a result, the valve holding cylinder 5 The relief hole 12 is pulled down and the spring 7 is simultaneously compressed by that amount. As a result, the opening pressure of the valve 6 is increased.

0012

[Effect of the idea]

As explained above, according to the present invention, the valve body is slidably held and the valve body is held slidably. A relief hole is provided in the sliding range of the valve body, and the top side of the valve body is connected to the main gallery. The communicating valve holding cylinder and the valve holding cylinder are slidably fitted, and a release is inserted into the fitting part. A cylinder portion having a valve passage, and an actuator for moving the valve holding cylinder from the outside. an actuator, the actuator according to the operating state of the engine. to move the valve retaining cylinder and adjust the position of the relief hole relative to the relief passage. The hydraulic pressure during relief by the valve body can be adjusted by displacing it within the corresponding range. When moving the valve holding cylinder up and down using the actuator, , because the valve body itself is kept in a balanced state between the spring force of the spring and the hydraulic pressure of the oil. There is no need for large force, and the actuator is installed outside the surrounding space. Since there is nothing occupying space, the device itself can be made compact.

[Brief explanation of drawings]

FIG. 1 is a sectional view schematically showing an example of the configuration of the present invention.

[Explanation of symbols]

1 Housing 2 Main gallery 3 Cylinder part 4 Relief passage 4A opening 5 Valve holding cylinder 5A Inner cylinder surface 5B Stepped part 6 Valve body 7 Support spring 10 Actuator 11 Passage hole 12 Relief hole

Claims (1)

[Scope of utility model registration request] 1. An oil pressure regulating device that moves a valve body against a spring force in response to a change in oil pressure in a main gallery of an engine, and allows the main gallery to communicate with a relief passage, wherein the valve body is slidable. The valve holding cylinder is slidably fitted into a valve holding cylinder which is held freely and has a relief hole in the sliding range of the valve body, and the top side of the valve body communicates with the main gallery. A cylinder part having a relief passage in a fitting part, and an actuator for moving the valve holding cylinder from the outside, and the actuator operates the movement of the valve holding cylinder according to the operating state of the engine. An oil pressure regulating device, characterized in that the oil pressure at the time of relief by the valve body can be adjusted by displacing the position of the relief hole within a range corresponding to the relief passage.