CN217681900U

CN217681900U - Cam phase adjuster capable of adjusting distribution phase

Info

Publication number: CN217681900U
Application number: CN202221734020.8U
Authority: CN
Inventors: 李岩岩; 郑恒远; 雎成; 鲁新来; 晋豪
Original assignee: HANGZHOU HIDEA POWER MACHINERY CO Ltd
Current assignee: HANGZHOU HIDEA POWER MACHINERY CO Ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-10-28
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses a cam phase regulator of adjustable distribution phase, include: the engine oil switching device is connected with the rotating phaser of the engine oil switching device; the rotary phaser comprises an inner rotor and an outer stator in sealing fit with the inner rotor, and an oil pressure cavity is formed between the outer stator and the inner rotor; the oil switch device comprises: an oil switch seat disposed in the inner rotor; the oil way control valve is connected with the engine oil switch seat; the oil passage control valve includes: the oil inlet oil path and the oil drainage oil path are axially arranged along the valve body; the oil inlet oil path is provided with a first oil inlet and a second oil inlet, and the oil drainage oil path is provided with a first oil discharge port and a second oil discharge port. The utility model discloses an engine oil switching device, the oil circuit and the oil mass of control machine oil to reach control inner rotor in the same direction as, anticlockwise rotation or keep unchangeable, thereby accurate control distribution phase, and obtain advancing of ideal, exhaust efficiency, with the purpose that realizes improving combustion efficiency and the dynamic property and the economic nature that promote the engine.

Description

Cam phase adjuster capable of adjusting distribution phase

Technical Field

The utility model relates to a cam phase regulator field, concretely relates to cam phase regulator of adjustable distribution phase.

Background

The higher the engine speed, the shorter the absolute time each cylinder has to be allowed to intake and exhaust in one working cycle, and therefore, to achieve higher charging efficiency, the longer the intake and exhaust times of the engine, i.e., the larger the valve overlap angle is required. However, under the working condition of low rotating speed, the excessive valve overlap angle can cause the waste gas to excessively enter the air inlet end, the air suction amount can be reduced on the contrary, the air flow in the cylinder can be disturbed, and the ECU can not control the air-fuel ratio accurately, so that the idle speed is unstable, and the low-speed torque is low. Conversely, if the valve train is optimized for low speed conditions, the engine may not achieve high peak power at high speeds. The engine design will therefore choose a compromise where it is not possible to achieve optimum conditions under both distinct operating conditions.

Although the compromise method can meet the normal operation of the engine at high and low speeds, the problems of power loss and oil consumption still exist, and the potential of the traditional internal combustion engine cannot be completely developed.

In order to solve the problem, the gas distribution phase can be required to be adjusted according to the difference of the rotating speed and the working condition of the engine, and the ideal gas inlet and exhaust efficiency can be ensured under high and low rotating speeds, so that the combustion efficiency is improved, and the dynamic property and the economical efficiency of the engine are improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a cam phase regulator of adjustable distribution phase is provided, through the inside cavity of outer stator to satisfy the inner rotor in its inside in the same direction as, the fixed angle of anticlockwise rotation, thereby realize the control of camshaft phase place.

The regulator comprises an outer stator, an inner rotor, an upper sealing cover, a lower sealing seat, a metal oil seal, an idling positioning device and an engine oil switch device; the outer stator is in rotary connection with the inner rotor through the inner cavity; the inner rotor forms a closed cavity with the outer stator through the upper sealing cover and the lower sealing seat.

A variable valve timing cam phaser, comprising: the engine oil switching device is connected with the rotating phaser of the engine oil switching device;

the rotary phaser comprises an inner rotor and an outer stator in sealing fit with the inner rotor, and an oil pressure cavity is formed between the outer stator and the inner rotor;

the oil switch device comprises:

an oil switch seat disposed in the inner rotor;

the oil way control valve is connected with the engine oil switch seat;

the oil passage control valve includes: the oil inlet oil path and the oil drainage oil path are axially arranged along the valve body;

the oil inlet oil path is provided with a first oil inlet and a second oil inlet, and the oil drainage oil path is provided with a first oil discharge port and a second oil discharge port.

The first oil inlet, the second oil inlet, the first oil unloading port and the second oil unloading port are connected into the oil pressure cavity through the engine oil switch seat.

In the utility model, the oil circuit and the oil mass are changed through the oil circuit control valve by the engine oil switch device, the oil circuit of the oil circuit control valve is not conducted when the engine is not in operation, when the engine is in high load, the oil circuit control valve conducts the first oil circuit according to the rotating speed of the engine, namely, the oil circuit control valve is matched with the engine oil switch seat to conduct the first oil inlet and the second oil discharge port with the oil pressure cavity, so that the inner rotor moves anticlockwise, the valve overlap angle is optimized, fresh air in a combustion chamber is supplied as much as possible, and high power and torque are realized; when the engine is in low load, the oil way control valve conducts a second oil way according to the rotating speed of the engine, namely the oil way control valve is matched with the engine oil switch seat to conduct a second oil inlet and a first oil discharge port with the oil pressure cavity, so that the inner rotor moves clockwise, the camshaft is adjusted to increase the overlap angle of the valve, and waste gas generated in the engine is recycled.

The engine oil switch seat is fixed on the inner rotor through a bolt.

The inner rotor includes: a rotor hub and a flap portion fixed to an outer circumference of the rotor hub. The valve part and the inner wall of the outer stator are provided with metal oil seals, so that an oil pressure cavity formed between the inner wall of the outer stator and the inner rotor has better sealing performance.

And an idling positioning device is arranged on the inner rotor.

The idle speed positioning device comprises: the device comprises a positioning pin, a spring and a screw plug, wherein a valve part of the inner rotor is provided with a threaded hole, the positioning pin, the spring and the screw plug are arranged in the threaded hole, and an idling positioning device is arranged on the inner rotor and is in contact connection with the lower sealing seat through the positioning pin, the spring and the screw plug. When in an idling state, the positioning pin restricts the inner rotor to a specified position.

Two sealing covers (an upper sealing cover and a lower sealing cover) are fixed on two sides of the outer stator, and the inner rotor is sealed in the outer stator through the two sealing covers.

Compared with the prior art, the utility model has the advantages of as follows:

(1) The utility model discloses an inside cavity of outer stator to satisfy the inner rotor in its inside in the same direction as, anticlockwise rotation fixed angle, thereby realize the control of camshaft phase place.

(2) The utility model discloses an engine oil switching device controls the oil circuit and the oil mass of engine oil to reach control inner rotor in the same direction as, anticlockwise rotation or keep unchangeable, thereby accurate control distribution phase, and obtain advancing, the exhaust efficiency of ideal, with the purpose that realizes improving combustion efficiency and the dynamic property and the economic nature that promote the engine.

Drawings

FIG. 1 is an external view of a cam phase adjuster according to the present invention;

fig. 2 is an exploded view of the cam phase adjuster of the present invention;

FIG. 3 is a positioning hole device of the cam phase adjuster of the present invention;

FIG. 4 is a schematic diagram of the operation of the internal structure of the utility model under the idle condition;

FIG. 5 is a schematic diagram of the internal structure of the present invention under high-speed operation;

FIG. 6 is a schematic diagram of the internal structure of the present invention under low-speed operation;

fig. 7 is a schematic view of the internal structure of the oil circuit control valve of the present invention;

fig. 8 is a schematic view of the internal oil path of the inner rotor of the present invention.

Detailed Description

The cam phase adjuster for adjusting the distribution phase according to the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a cam phase adjuster that adjusts a valve timing includes: the oil switch device is connected with the rotating phaser.

The oil switch device includes: an oil switch base 5 provided in the inner rotor 2; and an oil passage control valve 7 connected to the oil switch base 5. The engine oil switch base 5 is fixed on the inner rotor 2 through a bolt 6.

As shown in fig. 7, the oil passage control valve 7 includes: the valve body 71, and an oil inlet oil path 72 and an oil discharge oil path 73 which are axially arranged along the valve body 71;

the oil inlet path 72 is provided with a first oil inlet 74 and a second oil inlet 75, and the oil discharge path 73 is provided with a first oil discharge port 76 and a second oil discharge port 77.

The first oil inlet 74, the second oil inlet 75, the first oil discharge port 76 and the second oil discharge port 77 are connected into the oil pressure cavity through the engine oil switch base 5.

As shown in fig. 2 and 4, the rotational phaser includes an inner rotor 2 and an outer stator 1 hermetically fitted with the inner rotor 2, and an oil pressure cavity is formed between the outer stator 1 and the inner rotor 2;

the inner rotor 2 includes: a rotor hub and a lobe portion fixed to an outer circumference of the rotor hub. Be provided with metal oil blanket 3 between lamella portion and the outer stator inner wall, can make the oil pressure cavity that forms between 1 inner wall of outer stator and the inner rotor 2 have better leakproofness.

Oil holes with different heights are arranged on the inner rotor 2 close to the petal part, a first oil inlet 74 and a second oil inlet 75 are arranged on the oil path control valve 7, and a first oil discharge port 76 and a second oil discharge port 77 are arranged on the oil drainage oil path 73 and are connected with the oil holes through the engine oil switch seat 5. Two oilholes of lamella portion both sides, one oil feed is unloaded oil, can be so that the relative movement takes place between the lamella portion on the inner rotor 2 and the stator inside. As shown in fig. 8, the inner oil path of the inner rotor of the present invention is provided. As shown in fig. 4, in the idling operation, the lobes on the inner rotor 2 are in the middle of the movement space. As shown in fig. 5, when the engine is in a high-speed working condition, the flap portion of the inner rotor 2 moves counterclockwise, the oil control valve 7 is matched with the engine oil switch seat 5 to conduct the first oil inlet 72 and the second oil outlet 77 with the oil pressure cavity, so that the inner rotor moves counterclockwise, the valve overlap angle is optimized, fresh air in a combustion chamber is supplied as much as possible, and high power and torque are realized. As shown in fig. 6, when the engine is in a low-speed operating condition, the flap portion of the inner rotor 2 moves clockwise, the oil control valve 7 is matched with the engine oil switch seat 5 to connect the second oil inlet 75 and the first oil outlet 76 with the oil pressure cavity, so that the inner rotor 2 moves clockwise, the camshaft is adjusted to increase the valve overlap angle, and exhaust gas generated in the engine is recycled.

An upper sealing cover 4 and a lower sealing cover 11 are fixed on two sides of the outer stator 1, and the inner rotor 2 is sealed in the outer stator 1 by the upper sealing cover 4 and the lower sealing cover 11.

As shown in fig. 2 and 3, the inner rotor 2 is provided with an idle position determining device. The idle speed positioning device comprises: locating pin 10, spring 9 and plug screw 8 are equipped with the screw hole on the lamella portion of inner rotor 2, and locating pin 10, spring 9 and plug screw 8 are installed in the screw hole, and idling positioner sets up on inner rotor 2, and it passes through locating pin 10, spring 9, plug screw 8 contact with lower seal receptacle and is connected. The positioning pin 10 restricts the inner rotor 2 at a designated position when in an idling state. The positioning pin 10 is positioned on the positioning hole on the lower sealing seat 11, and after the oil pressure cavity is driven by oil pressure, the positioning pin 10 can slide out from the designated position.

As shown in fig. 2, the cam phase adjuster of the present invention includes an outer stator 1, an inner rotor 2, a metal oil seal 3, an upper sealing cover 4, an engine oil switch seat 5, a bolt 6, an oil control valve 7, a plug screw 8, a spring 9, a positioning pin 10, and a lower sealing seat 11.

The inner rotor 2 is connected to the inner part of the outer stator 1 in a contact manner, and a closed cavity (namely an oil pressure cavity) is formed by a U-shaped notch on the periphery of the inner rotor 2 and the inner cavity wall of the outer stator 1, and metal oil seals 3 are sequentially placed in the closed cavity.

The outer stator 1 is placed on the lower seal receptacle 11, and the positioning hole on the lower seal receptacle 11 faces the outer stator 11.

The positioning pin 10 and the spring 9 are sequentially placed in a threaded hole on the periphery of the inner rotor 2, and the screw plug 8 is connected with the inner rotor 2 through threads.

The upper sealing cover 4 is connected with the outer stator 1 and the lower sealing seat 11 through bolts 12 and nuts 13, and the inner rotor 2 is in a closed cavity.

The engine oil switch base 5 is tightly connected with the inner rotor 2 through a bolt 6, and the oil way control valve 7 is connected with the engine oil switch base 5 through a head thread.

The oil path control valve 7 is internally provided with two oil paths of oil inlet and oil drainage, when the oil path control valve 7 is not in operation, the oil path control valve 7 conducts a first oil path according to the rotating speed of the engine to enable the inner rotor 2 to move anticlockwise so as to optimize the valve overlap angle and supply fresh air to a combustion chamber as much as possible, thereby realizing high power and torque; when the load is low, the oil passage control valve 7 conducts the second oil passage according to the rotating speed of the engine, so that the inner rotor 2 moves clockwise, the camshaft is adjusted to increase the valve overlap angle, and the waste gas generated in the engine is recycled.

The above-mentioned detailed description is to the technical solution and the beneficial effects of the present invention, it should be understood that the above is only the most preferred embodiment of the present invention, not used for limiting the present invention, any modification, supplement and equivalent replacement etc. made within the principle scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable valve timing cam phaser comprising: the engine oil switching device is connected with the rotating phaser of the engine oil switching device; the rotary phaser comprises an inner rotor and an outer stator in sealing fit with the inner rotor, and an oil pressure cavity is formed between the outer stator and the inner rotor; characterized in that, the oil switch device comprises:

an oil switch seat disposed in the inner rotor;

the oil way control valve is connected with the engine oil switch seat;

the oil passage control valve includes: the valve body and along oil feed oil circuit and the draining oil circuit of valve body axial setting.

2. The cam phase adjuster with the adjustable valve timing of claim 1, wherein the oil inlet path is provided with a first oil inlet and a second oil inlet, and the oil discharge path is provided with a first oil discharge port and a second oil discharge port.

3. The variable valve timing cam phaser of claim 2, wherein the first oil inlet, the second oil inlet, the first oil outlet, and the second oil outlet are connected to the oil pressure chamber through the oil switch housing.

4. The variable valve timing cam phaser of claim 1, wherein the oil switch mount is bolted to the inner rotor.

5. The variable valve timing cam phaser of claim 1 wherein the inner rotor comprises: a rotor hub and a lobe portion fixed to an outer circumference of the rotor hub.

6. A variable valve timing cam phaser as in claim 5, wherein a metal oil seal is provided between the lobe and the inner wall of the outer stator.

7. The variable valve timing cam phaser of claim 1, wherein the inner rotor is provided with an idle stop.

8. The variable valve timing cam phaser of claim 7 wherein the idle position device comprises: locating pin, spring and plug screw.

9. A valve timing cam phaser as in claim 8, wherein the inner rotor lobe has a threaded bore in which the alignment pin, spring and plug screw are mounted.

10. A valve timing adjustable cam phaser as in claim 1, wherein two seals are fixed to both sides of said outer stator, and said inner rotor is sealed in said outer stator by said two seals.