CN1991145A - Cylinder Configuration Architecture of Multi-stage Variable Displacement Engine - Google Patents

Abstract

A multi-section type variable displacement engine cylinder configuration framework is characterized in that a plurality of cylinders with at least two displacement are configured in an engine, the plurality of cylinders can have at least two cylinder diameters or at least two strokes, or the cylinders with different cylinder diameters and different strokes can be mutually matched and operated to be divided into at least two groups, or the cylinders are divided into two groups according to the odd and even number sequence of ignition, the cylinder diameters of the two groups of cylinders are different, and the cylinder diameters of the same group of cylinders are the same, so that the engine has multi-section displacement variation combination to adapt to different driving states, and the purpose of reducing oil consumption is achieved.

Description

Cylinder Configuration Architecture of Multi-stage Variable Displacement Engine

technical field

The present invention relates to a cylinder configuration structure of a multi-stage variable displacement engine, and in particular to a cylinder displacement arrangement of unequal amounts, so that more displacement combinations can be adjusted according to the driving conditions of the vehicle. The adjustment maximizes the operating ratio of the engine in a more fuel-efficient area, further improving the fuel consumption of the vehicle.

Background technique

Most of the fuel-efficient operating points of the internal combustion engine of general gas vehicles are distributed in the high-load region where the engine speed is 2000~3500rpm. Area; based on the economic demand of reducing fuel consumption, it is currently known that the engine uses the valve mechanism actuation control technology to flexibly adjust the engine displacement according to the vehicle's driving conditions, so that the engine can run with a small number of cylinders when the engine is in a low-load state. , in addition to reducing the pumping loss of the engine intake (Pumping Loss), it can also increase the operating ratio of the engine in a more fuel-efficient area, thereby improving the fuel consumption of the vehicle; When the load is low, the intake and exhaust valves of some cylinders can be closed to enter the fuel-saving operation mode. When the load is heavy, the valves are fully opened to restore the large displacement. In order to maintain the balance of the engine, they are currently designed in Turn off half of the cylinders at light loads. For example, only four cylinders are used on the eight-cylinder engines of Chrysler and GM cars, and only three cylinders are used on the six-cylinder engines of Honda cars. The defect in the technology is that, because the displacement of each cylinder is the same, the engine can only switch between two-stage displacement operation modes. For example, the in-line multi-cylinder engine with multiple cylinders 11a-d shown in FIG. 1 10. It can control all the cylinders 11a-d to open for large displacement operation, or control two cylinders 11a, 11b to close, and only use the remaining two cylinders 11c, 11d for small displacement operation, or as shown in Figure 2 with multiple The V-type or horizontal multi-cylinder engine 20 of cylinders 21a-f can control all cylinders 21a-f to open for large displacement operation, or control three cylinders 21a-c to close, and only use the remaining three groups of cylinders 21d-f Operate with a small displacement; however, due to road conditions or other factors, the actual engine speed varies, and there are not only two types of loads, high and low. Therefore, if the implementation range of variable displacement operation can be expanded, the engine can be enlarged The operating ratio in the more fuel-efficient area further improves the fuel consumption of the vehicle.

Contents of the invention

The purpose of the present invention is to provide a multi-stage variable displacement engine cylinder configuration framework, through the configuration of non-equal cylinder displacements, more displacement combinations can be adjusted according to the driving conditions of the vehicle Adjust to maximize the operating ratio of the engine in a more fuel-efficient area, and further improve the fuel consumption of the vehicle.

To achieve the above object, the present invention provides a cylinder configuration structure of a multi-stage variable displacement engine, which includes a plurality of cylinders, and the plurality of cylinders are composed of individual cylinders with at least two displacements.

Preferably, the plurality of cylinders have at least two bore sizes.

Preferably, the plurality of cylinders have at least two strokes.

Preferably, the plurality of cylinders have at least two types of bore diameters and at least two types of strokes.

Preferably, the plurality of cylinders are divided into at least two groups, and the total displacement of the cylinders in each group is different.

Preferably, the plurality of cylinders are divided into two groups according to the order of odd and even numbers of firing.

Preferably, the number of cylinders in each group of cylinders can be different.

Preferably, the bore diameters of the cylinders in each group of cylinders may be different.

Preferably, the strokes of the cylinders in each group of cylinders can be different.

Preferably, the engine can be an in-line multi-cylinder engine, a V-type or a horizontal multi-cylinder engine.

In order to have a further understanding and recognition of the structure, purpose and effect of the present invention, the detailed description is as follows with the illustrations.

Description of drawings

Fig. 1 is a schematic diagram of cylinder configuration of an existing in-line multi-cylinder engine;

Fig. 2 is the cylinder disposition schematic diagram of existing V-shaped or horizontal multi-cylinder engine;

Fig. 3 is a schematic diagram of a preferred embodiment of the cylinder arrangement of the present invention applied to an in-line multi-cylinder engine;

Fig. 4 is a schematic diagram of a preferred embodiment of the cylinder configuration applied to a V-type or horizontal multi-cylinder engine of the present invention;

Fig. 5 is a schematic diagram of another preferred embodiment of the cylinder arrangement of the present invention applied to an in-line multi-cylinder engine;

Fig. 6 is a schematic diagram of another preferred embodiment of the cylinder arrangement of the present invention applied to a V-type or horizontal multi-cylinder engine.

Explanation of reference signs

Prior art: 10-inline multi-cylinder engine; 11a～d-cylinder; 20V-type or horizontal multi-cylinder engine; 21a～f-cylinder.

The present invention: 30, 50-inline multi-cylinder engine; 31a, 31b, 32a, 32b, 51～54-cylinder; 40, 60-V type or horizontal multi-cylinder engine; 41a～c, 42a～c, 61～ 66-cylinder; A, B-group.

Detailed ways

Please refer to Fig. 3, which is a preferred embodiment in which the cylinder configuration framework of the multi-stage variable displacement engine provided by the present invention is applied to an in-line multi-cylinder engine 30, and the in-line multi-cylinder engine 30 has four cylinders 31a, 31b, 32a, 32b, wherein the odd-numbered cylinders 31a, 31b are set as group A, and the even-numbered cylinders 32a, 32b are set as group B, the cylinders 31a, 31b of group A have the same bore diameter, and the cylinders of group B 32a, 32b have the same bore diameter, and the bore diameters of cylinders 32a, 32 of group B are smaller than those of cylinders 31a, 31b of group A. The cylinder displacement is controlled by the valve mechanism (not shown in the figure), so that the in-line multi-cylinder engine 30 can only operate with the A group of cylinders 31a, 31b or only with the B group of cylinders 32a, 32b, or A and B groups of cylinders 31a, 31b, 32a, 32b operate at the same time, so that the in-line multi-cylinder engine 30 can have three different displacement operation modes, and only the B groups of cylinders 32a, 32b operate The total displacement is the smallest, and the total displacement is larger only when the A group of cylinders 31a, 31b are running, and the maximum displacement can be obtained when the A and B groups of cylinders 31a, 31b, 32a, 32b operate simultaneously.

Referring to Fig. 4 again, the cylinder configuration framework of the multistage variable displacement engine provided by the present invention is applied to a preferred embodiment of a V-shaped or horizontally paired multi-cylinder engine 40, and the V-shaped or horizontally paired The horizontal multi-cylinder engine 40 has six cylinders 41a-c, 42a-c, wherein the odd-numbered cylinders 41a-c are set as group A, the even-numbered cylinders 42a-c are set as group B, and the cylinders of the A group 41a～c have the same bore diameter, and the cylinder diameters of the group B cylinders 42a～c are the same, and the cylinder bores of the group B cylinders 42a～c are smaller than the cylinder bores of the A group cylinders 41a～c, that is, the single-cylinder exhaust gas of the B group cylinders 42a～c The amount is less than the single-cylinder exhaust volume of the A group of cylinders 41a~c, through the actuation control of the valve mechanism (not shown in the figure), the V-type or horizontal multi-cylinder engine 40 can only use the A group of cylinders 41a~ c operation or only with B group cylinder 42a～c operation, or A, B group cylinder 41a～c, 42a～c operate simultaneously, like this, can make described V type or horizontal pair horizontal multi-cylinder engine 40 have three Different displacement operation modes, the total displacement is the smallest when operating only with the group B cylinders 42a~c, the total displacement is larger when only the group A cylinders 41a~c are operating, and the cylinders of the A and B groups When 41a～c, 42a～c operate simultaneously, the maximum displacement can be obtained.

The preferred embodiment of Fig. 3 and Fig. 4 is characterized in that the cylinders are set to groups of two different bores, so that the engine has three kinds of displacement variations, and in the same way, if the set cylinder bores are different, then There are more designs with different displacement changes. As shown in FIG. 5, the in-line multi-cylinder engine 50 has four cylinders 51, 52, 53, 54 with different bores. Ideally, the four cylinders 51, 52 . , or four cylinders 51, 52, 53, 54 full operation, so that the in-line multi-cylinder engine 50 can be made to have fourteen different displacement operating modes; The horizontally opposed multi-cylinder engine 60 can be provided with six cylinders 61-66 with different cylinder bores, and each cylinder can be matched with each other to make the V-shaped or horizontally opposed multi-cylinder engine 60 have more different displacements. design.

The above-mentioned embodiments are illustrated by the configuration of cylinders with different bore diameters. In addition, the bore diameters of the cylinders included in each group of cylinders may also be different. The stroke of each cylinder can be kept the same, so that the interface between each cylinder and the cylinder head can maintain the same plane, and the stroke of each cylinder can also be set to be different. Through the mutual matching of different bores and different strokes, a multi-stage variable can be formed. Displacement engine needs; In addition, it must be explained that due to factors such as cylinder bores, strokes, or closed cylinders, etc., or problems such as engine balance, noise, and vibration that may be caused, can be overcome by existing technical means, and are not Prevent the present invention from solving the problem of fuel consumption.

To sum up, the cylinder configuration structure of a multi-stage variable displacement engine of the present invention is to configure cylinders with at least two displacements in the engine, and cylinders with different bores and strokes can be matched with each other. The operation is divided into at least two groups, so that the engine has multi-stage variable displacement to adapt to different operating speeds and achieve the purpose of reducing fuel consumption.

The above descriptions are only the preferred embodiments of the present invention, and should not be used to limit the implementation scope of the present invention. That is, all equivalent changes and modifications made according to the claims of the present invention should still fall within the scope covered by the patent of the present invention.

Claims (20)

1. the cylinder configuration framework of a multistage type variable air displacement engine, it is characterized in that: comprise a plurality of cylinders, described a plurality of cylinders are made up of the individual cylinder with at least two kinds of air displacemenies.

2. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 1, it is characterized in that: described a plurality of cylinders have at least two kinds of cylinder diameters.

3. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 2, it is characterized in that: described a plurality of cylinders are to be divided at least two groups, and respectively organize the gross exhaust gas inequality of cylinder.

4. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 3 is characterized in that: described a plurality of cylinders are that the odevity according to igniting is divided into two groups in proper order.

5. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 3 is characterized in that: each organizes the cylinder number that cylinder has can be different.

6. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 3 is characterized in that: each organizes the cylinder diameter of the cylinder that is had in the cylinder can be different.

7. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 3 is characterized in that: each organizes the stroke of the cylinder that is had in the cylinder can be different.

8. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 1, it is characterized in that: described a plurality of cylinders have at least two kinds of strokes.

9. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 8, it is characterized in that: described a plurality of cylinders are to be divided at least two groups, and respectively organize the gross exhaust gas inequality of cylinder.

10. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 9 is characterized in that: described a plurality of cylinders are that the odevity according to igniting is divided into two groups in proper order.

11. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 9 is characterized in that: each organizes the cylinder number that cylinder has can be different.

12. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 9 is characterized in that: each organizes the cylinder diameter of the cylinder that is had in the cylinder can be different.

13. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 9 is characterized in that: each organizes the stroke of the cylinder that is had in the cylinder can be different.

14. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 1 is characterized in that: described a plurality of cylinders have at least two kinds of cylinder diameters and at least two kinds of strokes.

15. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 14 is characterized in that: described a plurality of cylinders are to be divided at least two groups, and respectively organize the gross exhaust gas inequality of cylinder.

16. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 15 is characterized in that: described a plurality of cylinders are to be divided into two groups in proper order according to the odevity of lighting a fire.

17. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 15 is characterized in that: each organizes the cylinder number that cylinder has can be different.

18. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 15 is characterized in that: each organizes the cylinder diameter of the cylinder that is had in the cylinder can be different.

19. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 15 is characterized in that: each organizes the stroke of the cylinder that is had in the cylinder can be different.

20. the cylinder configuration framework of multistage type variable air displacement engine as claimed in claim 1 is characterized in that: described engine can be in-line multi-cylinder engine, V-type or level to the multi-cylinder engine that crouches.

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