CN215633374U

CN215633374U - Three-valve structure of engine

Info

Publication number: CN215633374U
Application number: CN202121866569.8U
Authority: CN
Inventors: 唐昌金
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-25
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a three-valve structure of an engine, belonging to the field of engine valve structure devices, comprising a cylinder cover of a gasoline or diesel internal combustion engine, wherein the cylinder cover is provided with an inlet valve, an outlet valve, an igniter and an oil nozzle; the guide sleeve can control the opening height of the exhaust valve core, and the one-way hydraulic cylinder is connected with the hydraulic reversing valve through a hydraulic reversing valve interface.

Description

Three-valve structure of engine

Technical Field

The utility model relates to the field of engine valve structure devices, in particular to a three-valve structure of an engine.

Background

With the continuous development of automobile technology, automobile engines are improved and a lot of effects are achieved in all countries in the world. The existing automobile engine widely uses a reciprocating piston internal combustion engine, and the power configuration of the engine is designed to enable the automobile to have good power performance and certain glass climbing capability when the automobile is fully loaded, so that the engine has larger reserve power. When the automobile runs at a constant speed when the automobile is fully loaded on a flat road, the load rate of the engine is only 20-50%. The optimal load rate of the engine is 80-90%, and the specific oil consumption of the engine is remarkably increased under partial load. For example, the horsepower is enough when in transportation and the oil is wasted when in empty operation when in unilateral special transportation vehicles, muck vehicles, large trucks and the like which use a diesel internal combustion engine; similarly, for a car using a gasoline internal combustion engine, energy waste is caused by mismatching of power and discharge capacity under the conditions of turtle-shaped running, traffic lights and the like at traffic jam sections in cities.

Because the engine works under partial load working condition most of the time, a large amount of energy is wasted, and the environment is polluted by the large amount of emission of automobile exhaust. In order to increase the load factor of the engine and reduce the energy consumption, engineers invented a cylinder closing operation method, namely: one part of cylinders always work, the other part of cylinders work only under high load, and the closed cylinders do not work under low load. The working displacement of the engine is changed along with the load according to the requirement, so that the engine can work in a state of high load rate for a long time, the larger power performance of the automobile is not influenced, and the fuel economy can be better improved. The specific methods for saving oil by closing the cylinder in the past are as follows: cutting off the fuel supply only; the throttle valve is fully opened while the fuel is cut off, and fresh air is supplied without throttling; cutting off fuel oil to circulate the waste gas so as to exhaust the gas instead of fresh gas; stopping oil and gas supply and closing the air inlet and exhaust valves.

Based on the thought, in order to improve the utilization rate of fuel oil, reduce carbon emission and enable the fuel oil efficiency to reach a better state, the utility model adopts a variable cylinder variable technology to solve the change of load and the output power of the engine and provides a three-valve structure of the engine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a three-valve structure of an engine, which adopts the technical scheme that:

a three-valve structure of an engine comprises a cylinder cover of a gasoline or diesel internal combustion engine, wherein an inlet valve, an outlet valve, an igniter and an oil nozzle are arranged on the cylinder cover, an exhaust valve is further arranged on the cylinder cover of the engine and used for exhausting, a valve core of the exhaust valve is driven by a one-way hydraulic cylinder to lift, a piston rod of the one-way hydraulic cylinder is connected with a guide sleeve, and the upper end of the valve core is movably arranged in the guide sleeve; the one-way hydraulic cylinder is connected with the hydraulic reversing valve through a hydraulic reversing valve interface.

Further, when the internal combustion engine is a gasoline engine, the guide sleeve is connected with a piston rod of the one-way hydraulic cylinder through a balance rocker arm, the balance rocker arm is connected to the tail end of the one-way hydraulic cylinder, one side of the balance rocker arm is connected with the guide sleeve, and the other side of the balance rocker arm is connected with the synchronous cam.

Furthermore, the upper end of the balance rocker arm is connected with a piston rod of the one-way hydraulic cylinder, the lower end of the balance rocker arm is connected with the movable seat of the balance rocker arm, a roller is arranged on one side of the balance rocker arm, and the roller is in contact connection with the synchronous cam.

Further, when the internal combustion engine is a diesel engine, the guide sleeve is directly connected with a piston rod of the one-way hydraulic cylinder.

Furthermore, the guide sleeve is of a frame structure with an opening at one end, a spring is arranged in the guide sleeve, one end of the spring is connected to a bottom plate of the guide sleeve, and the other end of the spring is connected with a baffle on the valve core.

Furthermore, the baffle is arranged on the upper portion of the valve core, the diameter of the baffle is smaller than the inner diameter of the guide sleeve, and the baffle is located in the guide sleeve.

The utility model has the beneficial effects that:

the utility model is that on the engine cylinder cover of more than two cylinders in normal operation, a valve is arranged for exhausting, namely, an exhaust valve is added on the basis of the existing intake valve and exhaust valve to form a three-valve structure. The exhaust valve does not participate in normal work, only is opened in an energy-saving state, and the valve core of the exhaust valve is not higher than a cylinder cover when opened, and adopts hysteresis deflection and pulse auxiliary control (preventing the blow-out phenomenon of the exhaust valve), when the exhaust valve works, an oil nozzle (igniter) is powered off, oil injection, compression and work are not carried out, and the cylinder is in idle running, so that the consumption of fuel oil is reduced.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

FIG. 1 is a schematic view of the valve distribution of the present invention.

Fig. 2 is a schematic diagram of the exhaust valve structure applied to a diesel engine.

Fig. 3 is a schematic diagram of the exhaust valve structure applied to a gasoline engine.

The text labels in the figures are represented as: 1. An intake valve; 2. an air outlet valve; 3. an exhaust valve; 4. igniters and fuel injectors; 5. a one-way hydraulic cylinder; 6. a balance rocker arm; 7. a synchronizing cam; 8. a balance rocker arm movable seat; 9. a movable rod; 10. a hydraulic directional valve interface; 11. the valve core.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Referring to fig. 1-3, the structure of a preferred embodiment of a three-valve structure of an engine according to the present invention is schematically shown.

A three-valve structure of an engine comprises a cylinder cover of a gasoline or diesel internal combustion engine, wherein an inlet valve 1, an outlet valve 2, an igniter and an oil nozzle 4 are arranged on the cylinder cover, an exhaust valve 3 is also arranged on the cylinder cover of the engine and used for exhausting, a valve core 11 of the exhaust valve 3 is driven by a one-way hydraulic cylinder 5 to lift, a piston rod of the one-way hydraulic cylinder 5 is connected with a guide sleeve, and the upper end of the valve core 11 is movably arranged in the guide sleeve; the one-way hydraulic cylinder 5 is connected with a hydraulic reversing valve through a hydraulic reversing valve interface 10.

Preferably, as shown in fig. 3, when the internal combustion engine is a gasoline engine, the guide sleeve is connected with a piston rod of the unidirectional hydraulic cylinder 5 through a balance rocker arm 6, the balance rocker arm 6 is connected to the tail end of the unidirectional hydraulic cylinder 5, one side of the balance rocker arm 6 is connected with the guide sleeve, and the other side of the balance rocker arm is connected with the synchronous cam 7. The upper end of the balance rocker arm 6 is connected with a piston rod of the one-way hydraulic cylinder 5 through a movable rod 9, the lower end of the balance rocker arm is connected with a balance rocker arm movable seat 8, and a roller is arranged on one side of the balance rocker arm 6 and is in contact connection with the synchronous cam 7.

Preferably, as shown in fig. 2, when the internal combustion engine is a diesel engine, the guide sleeve is directly connected to a piston rod of the unidirectional hydraulic cylinder 5.

Preferably, as shown in fig. 2 and 3, the guide sleeve is a frame structure with an opening at one end, a spring is arranged in the guide sleeve, one end of the spring is connected to a bottom plate of the guide sleeve, and the other end of the spring is connected to a baffle plate on the valve core 11. The baffle is arranged on the upper part of the valve core 11, the diameter of the baffle is smaller than the inner diameter of the guide sleeve, and the baffle is positioned in the guide sleeve.

When in specific use, the exhaust valve opening mode applied to the gasoline engine is as follows:

the gasoline engine has high rotating speed, a synchronous gear chain is used for driving a synchronous cam 7 to work in cooperation with a balance rocker arm 6 and a one-way hydraulic cylinder 5, when the cylinder is used for air intake, an exhaust valve 3 is closed, and when the cylinder is used for compression and work application, the exhaust valve 3 is opened.

The exhaust valve opening mode applied to the diesel engine is as follows:

the diesel engine has low rotating speed, and the unidirectional hydraulic cylinder 5 is directly used for driving the valve core 11 to work.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the utility model using its spirit and scope, as defined by the claims, should be considered as protection.

Claims

1. A three-valve structure of an engine comprises a cylinder cover of a gasoline or diesel internal combustion engine, wherein an inlet valve (1), an outlet valve (2), an igniter and an oil nozzle (4) are arranged on the cylinder cover, and the three-valve structure is characterized in that an exhaust valve (3) is also arranged on the cylinder cover of the engine and used for exhausting air, a valve core (11) of the exhaust valve (3) is driven by a one-way hydraulic cylinder (5) to lift, a piston rod of the one-way hydraulic cylinder (5) is connected with a guide sleeve, and the upper end of the valve core (11) is movably arranged in the guide sleeve; the one-way hydraulic cylinder (5) is connected with the hydraulic reversing valve through a hydraulic reversing valve interface (10).

2. The three-valve structure of the engine according to claim 1, wherein when the internal combustion engine is a gasoline engine, the guide sleeve is connected with a piston rod of the one-way hydraulic cylinder (5) through a balance rocker arm (6), the balance rocker arm (6) is connected to the tail end of the one-way hydraulic cylinder (5), one side of the balance rocker arm (6) is connected with the guide sleeve, and the other side of the balance rocker arm is connected with the synchronous cam (7).

3. The three-valve structure of the engine according to claim 2, wherein the upper end of the balance rocker arm (6) is connected with a piston rod of the one-way hydraulic cylinder (5) and the lower end is connected with the balance rocker arm movable seat (8), and a roller is arranged on one side of the balance rocker arm (6) and is in contact connection with the synchronous cam (7).

4. The three-valve structure of an engine according to claim 1, wherein the guide bush is directly connected to a piston rod of the one-way hydraulic cylinder (5) when the internal combustion engine is a diesel engine.

5. The structure of three valves of an engine according to claim 1, 2 or 4, characterized in that the guide sleeve is a frame structure with one open end, a spring is arranged in the guide sleeve, one end of the spring is connected to the bottom plate of the guide sleeve, and the other end of the spring is connected to the baffle plate on the valve core (11).

6. The three-valve structure of an engine according to claim 5, wherein the baffle is disposed at an upper portion of the valve core (11), and has a diameter smaller than an inner diameter of the guide bush and is located in the guide bush.