A new type of oil-electric hybrid power unit assembly structure

Abstract

The present invention discloses a novel oil-electric hybrid power unit assembly structure, comprising: a body, which includes a plurality of first cylinders and a plurality of second cylinders; a plurality of pistons, which are arranged in a one-to-one correspondence in the plurality of first cylinders; a valve mechanism, which is used to open or close the intake and exhaust valves of the first cylinders; a plurality of linear motors, which are arranged in a one-to-one correspondence in the plurality of second cylinders; the linear motor includes a stator mechanism and a mover mechanism; a crankshaft, which is arranged close to one end of the first cylinder and the second cylinder at the same time, and is used to output power; a plurality of first connecting rods, one end of which is connected to the plurality of pistons in a one-to-one correspondence, and the other end is connected to the crankshaft to drive the crankshaft to rotate; a plurality of second connecting rods, one end of which is connected to the plurality of mover mechanisms in a one-to-one correspondence, and the other end is connected to the crankshaft. The novel oil-electric hybrid power unit assembly structure provided by the present invention can realize the output of multiple power, with fewer intermediate energy transmission and conversion mechanisms and high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle power systems, and in particular relates to a novel oil-electric hybrid power unit assembly structure. Background Art

[0002] In recent years, the two major themes of energy conservation and environmental protection have driven the exploration and research of new automotive power devices with high energy transfer and conversion efficiency. The piston internal combustion engine in traditional internal combustion engine vehicles can only convert the heat energy generated by fuel combustion into mechanical energy to rotate the crankshaft, and cannot directly meet the needs of multiple power; in addition, the traditional piston internal combustion generator set has a complex structure, large volume, multiple intermediate energy conversion mechanisms, and low efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a novel oil-electric hybrid power unit assembly structure, which can achieve multi-power output, has fewer intermediate energy transmission and conversion mechanisms, and has high efficiency.

[0004] The technical solution provided by the present invention is:

[0005] A novel oil-electric hybrid power unit assembly structure, comprising:

[0006] a body, comprising a plurality of first cylinder bodies and a plurality of second cylinder bodies;

[0007] A plurality of pistons, which are disposed in the plurality of first cylinders in a one-to-one correspondence;

[0008] A valve mechanism, which is used to open or close the intake and exhaust valves of the first cylinder;

[0009] A plurality of linear motors, which are arranged in the plurality of second cylinder bodies in a one-to-one correspondence; the linear motors include a stator mechanism and a mover mechanism;

[0010] A crankshaft, which is disposed close to one end of the first cylinder body and the second cylinder body, and is used to output power;

[0011] a plurality of first connecting rods, one end of which is connected to the plurality of pistons one by one, and the other end of which is connected to the crankshaft to drive the crankshaft to rotate;

[0012] A plurality of second connecting rods, one end of which is connected to the plurality of movable member mechanisms in a one-to-one correspondence, and the other end of which is connected to the crankshaft.

[0013] Preferably, the mover mechanism comprises:

[0014] A supporting connecting member having a cylindrical shape;

[0015] A permanent magnet, which is fixedly disposed on the supporting connecting member in a surrounding manner;

[0016] Wherein, one end of the second connecting rod is rotatably connected to the supporting connecting member.

[0017] Preferably, a piston pin is mounted on the supporting connecting member; one end of the second connecting rod has a connecting sleeve, and the connecting sleeve is rotatably sleeved on the piston pin.

[0018] Preferably, the stator mechanism comprises:

[0019] A stator core, fixedly arranged on the inner wall of the second cylinder body;

[0020] The coil winding is embedded in the stator slot of the stator core.

[0021] Preferably, the slot fill rate of the stator slots ranges from 70% to 80%.

[0022] Preferably, the air gap length between the mover mechanism and the stator mechanism is 1 mm.

[0023] Preferably, the novel oil-electric hybrid power unit assembly structure further comprises: a bearing bush fixedly mounted on the other end of the second connecting rod;

[0024] Wherein, the bearing shell is in rotational clearance fit with the journal of the crankshaft.

[0025] Preferably, the novel oil-electric hybrid power unit assembly structure further comprises: a connecting rod cover having a first semi-cylindrical groove;

[0026] The other end of the second connecting rod has a second semi-cylindrical groove, and the shapes of the first semi-cylindrical groove and the second semi-cylindrical groove match each other; the first semi-cylindrical groove and the second semi-cylindrical groove are arranged opposite to each other, and the connecting rod cover body is detachably connected to the end of the second connecting rod, so that a cylindrical cavity is formed between the connecting rod cover body and the end of the second connecting rod;

[0027] The bearing shell is arranged in the cylindrical cavity by means of interference fit.

[0028] Preferably, the number of the first cylinder and the number of the second cylinder are two respectively;

[0029] The two first cylinder bodies are arranged adjacent to each other in the horizontal direction, and the two second cylinder bodies are respectively located on both sides of a connecting body formed by the two first cylinder bodies.

[0030] Preferably, the linear motor is cooled by water to increase the electromagnetic load of the motor.

[0031] The beneficial effects of the present invention are:

[0032] 1. The present invention provides a novel oil-electric hybrid power unit assembly structure, which improves the traditional in-line multi-cylinder gasoline engine. Linear motors are used in several cylinders of the gasoline engine to replace the original pistons. The design is novel and reasonable, the structure is simple and compact, the volume is small, and multiple power outputs can be directly realized. The complex intermediate energy transmission and conversion mechanism of the traditional piston internal combustion generator set is eliminated, and the reciprocating linear motion of the linear motor rotor group can be directly converted into electrical energy output, thereby improving the energy conversion efficiency.

[0033] 2. The new oil-electric hybrid power unit assembly structure provided by the present invention uses a linear motor instead of the original piston, which makes the operation more stable, reduces vibration and pollution, and can realize three working modes: driven by only a traditional piston internal combustion engine, driven by only a linear motor, and both working together. It combines the advantages of traditional internal combustion engines and linear motors, and provides new ideas for the research and development of hybrid vehicles.

[0034] 3. The novel oil-electric hybrid power unit assembly structure provided by the present invention uses a crank-connecting rod mechanism to constrain the movement of the linear motor mover group, solving the problem of uncertain upper and lower dead point positions and ignition timing of the free piston engine and unstable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a front and cross-sectional view of the new oil-electric hybrid power unit assembly structure described in the present invention.

[0036] Figure 2 It is a side view and cross-sectional view of the new oil-electric hybrid power unit assembly structure described in the present invention.

[0037] Figure 3 It is a structural schematic diagram of the mover mechanism described in the present invention.

[0038] Figure 4 It is a structural schematic diagram of the stator mechanism of the present invention. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0040] like Figure 1-4 As shown, the present invention provides a novel oil-electric hybrid power unit assembly structure, which mainly includes: a body 100, a plurality of pistons 110, a valve mechanism, a plurality of linear motors, a crankshaft 140, a first connecting rod 150a and a second connecting rod 150b.

[0041] The body 100 includes a plurality of first cylinder bodies 100a and a plurality of second cylinder bodies 100b. A plurality of pistons 110 are disposed in the plurality of first cylinder bodies 100a in a one-to-one correspondence.

[0042] The valve mechanism includes: multiple valve groups 121 and a valve transmission group 122. The valve transmission group 122 is a camshaft structure for opening or closing the multiple valve groups 121. The valve groups 121 are arranged on the first cylinder 100a in a one-to-one correspondence. When the valve group 121 is opened, the corresponding first cylinder 100a is inhaled or exhausted.

[0043] A plurality of linear motors are arranged in a one-to-one correspondence in a plurality of second cylinder bodies 100 b ; the linear motors include a stator mechanism 131 and a mover mechanism 132 ; the mover mechanism 132 can perform reciprocating linear motion along the axial direction of the stator mechanism 131 .

[0044] The crankshaft 140 is disposed near one end of the first cylinder body 100a and the second cylinder body 100b for outputting power. One end of the plurality of first connecting rods 150a is connected to the plurality of pistons 110 in one-to-one correspondence, and the other end is connected to the crankshaft 140 to drive the crankshaft 140 to rotate. One end of the plurality of second connecting rods 150b is connected to the plurality of movable sub-mechanisms 131 in one-to-one correspondence, and the other end is connected to the crankshaft 140 to drive the crankshaft 140 to rotate or be driven by the crankshaft 140 to move.

[0045] The structure and working principle of the novel hybrid power unit assembly provided by the present invention will be further described below in conjunction with specific embodiments.

[0046] In this embodiment, the novel oil-electric hybrid power unit assembly structure is modified on the basis of a traditional inline four-cylinder gasoline engine. The engine body 100 adopts a traditional four-cylinder gasoline engine engine body group structure, including two first cylinder bodies 100a and two second cylinder bodies 100b. Among them, the two first cylinder bodies 100a are arranged adjacent to each other in the horizontal direction, and the two second cylinder bodies 100b are respectively located on both sides of the connecting body formed by the two first cylinder bodies 100a; that is, in order from left to right, the second cylinder body and the third cylinder body are defined as the first cylinder body 100a, and the first cylinder body and the fourth cylinder body are defined as the second cylinder body 100b.

[0047] The two first cylinder bodies 100a maintain the original structure of the traditional four-cylinder gasoline engine body group, that is, a piston 110 is arranged in the first cylinder body 100a, and the movement of the piston 110 drives the crankshaft 140 to rotate to achieve power output. Among them, the crankshaft 140 adopts the crankshaft structure of a traditional piston internal combustion engine; the structure and setting method of the valve mechanism, the structure and connection method of the piston 110 and the first connecting rod 150a and the crankshaft 140 are the same as those of the traditional four-cylinder gasoline engine body group, and will not be repeated here.

[0048] The valve group and the corresponding structure on the cylinder head are removed above the two second cylinder bodies 100b, and the corresponding camshafts are not processed with intake and exhaust cams. A linear motor is installed in the second cylinder body 100b; the linear motor includes a stator mechanism 131 and a mover mechanism 132; the mover mechanism 132 can perform reciprocating linear motion along the axial direction of the stator mechanism 131.

[0049] like Figure 2-4 As shown, the mover mechanism 132 includes: a permanent magnet 132a, a supporting connector 132b, a piston pin 132c and a magnetic conductive block 132d. The supporting connector 132b has a cylindrical shape, and the permanent magnet 132a is pasted on the supporting connector 132b by axial magnetization. Preferably, the supporting connector 132b is set as a hollow cylindrical structure, and a piston pin hole is radially opened on the supporting connector 132b, and a piston pin 132c is installed in the piston pin hole. Two grooves are symmetrically arranged at both ends of the piston pin hole, and a retaining ring 132e is installed in the groove. The retaining ring 132e is connected to the groove in a slot-type manner, and the piston pin 132c is installed between the two retaining rings 132e. The retaining ring 132e can be set to axially limit the piston pin 132c to prevent the piston pin 132c from moving axially. The supporting connector 132b is set as a cylindrical structure to reduce the weight of the supporting connector 132b, thereby reducing energy loss. As a preferred embodiment, the supporting connector 132b is made of aluminum alloy.

[0050] The supporting connecting member 132b and the second connecting rod 150b are connected through a piston pin 132c. The upper end (small end) of the second connecting rod 150b has a connecting sleeve 150ba, which is cylindrical and rotatably sleeved on the piston pin 132c.

[0051] The new oil-electric hybrid power unit assembly structure also includes: a connecting rod cover 151, which has a first semi-cylindrical groove. The lower end (big end) of the second connecting rod 150b has a second semi-cylindrical groove with an opening facing outward. Among them, the shapes of the first semi-cylindrical groove and the second semi-cylindrical groove match each other; the first semi-cylindrical groove (opening upward) and the second semi-cylindrical groove (opening downward) are arranged opposite to each other, and the connecting rod cover 151 is detachably connected to the end of the second connecting rod 150b by bolts, so that a cylindrical cavity is formed between the connecting rod cover 151 and the end of the second connecting rod 150b; a bearing 141 is arranged in the cylindrical cavity, and the bearing 141 is installed in the cylindrical cavity by interference fit. The bearing 141 and the connecting rod journal of the crankshaft 140 are connected by a rotating clearance fit.

[0052] A crank-connecting rod mechanism is formed between the linear motor and the crankshaft 140. The crank-connecting rod mechanism is used to constrain the movement of the linear motor rotor group, which can solve the problems of uncertain upper and lower dead point positions and ignition timing of the free piston engine and unstable operation.

[0053] The stator mechanism 131 is arranged around the mover mechanism 132, and the stator mechanism 131 mainly includes: a coil winding 131a and a stator core 131b. The stator core 131b is installed on the inner wall of the second cylinder body 100b by interference fit, and is positioned by the inner wall of the second cylinder body 100b and the cylinder head 160. Since the combustion chamber and the valve group are not arranged on the upper part of the linear motor, the upper end of the linear motor can be connected to the cylinder head 160.

[0054] The stator core 131b is made of silicon steel sheets into modules of uniform shape and then stacked by multiple modules. The stator slots of the stator core 131b are rectangular slots, and the longitudinal end effect of the linear motor is reduced by optimizing the edge tooth size. In addition, the axial length of the stator core 131b is mainly determined by the piston stroke and the piston length, which is the sum of the two. The coil winding 131a adopts a pancake-shaped coil, which is embedded in the stator slot. The slot space occupied by the coil winding 131a in the stator is expressed by the slot fill rate.

[0055] As a preferred embodiment, the range of the tank fill rate is set to 70% to 80%;

[0056] As a further preference, the air gap length between the stator mechanism 131 and the mover mechanism 132 is 1 mm.

[0057] As a further preference, the linear motor is cooled by water to increase the electromagnetic load of the motor.

[0058] In this embodiment, the traditional inline four-cylinder gasoline engine is modified and a linear motor is used to replace the original 1 and 4 cylinder pistons. The design is novel and reasonable, the structure is simple and compact, the volume is small, and multiple power outputs can be directly realized. The complex intermediate energy transfer and conversion mechanism of the traditional piston internal combustion generator set is eliminated, and the reciprocating linear motion of the linear motor rotor group can be directly converted into electrical energy output, thereby improving the energy conversion efficiency.

[0059] The working process of the novel oil-electric hybrid power unit assembly provided by the present invention is as follows:

[0060] When the linear motor is working, three-phase alternating current is passed through the coil winding 131a of the linear motor to generate an air gap magnetic field. This air gap magnetic field moves linearly with the change of the three-phase current, and is also called a traveling wave magnetic field. The magnetic field generated by the permanent magnet 132a in the mover mechanism 132 of the linear motor interacts with this traveling wave magnetic field to generate an electromagnetic thrust, which pushes the mover mechanism 132 to move. By swapping any two-phase power lines of the linear motor, the mover mechanism 132 can move in the opposite direction, and the cyclic operation can realize reciprocating linear motion, thereby driving the crankshaft 140 to rotate through the second connecting rod 150b to output power to the outside. The working process of the cylinder body on which the piston 110 is installed is the same as the working process of a traditional piston internal combustion engine.

[0061] The novel oil-electric hybrid power unit assembly provided by the present invention operates more smoothly, with reduced vibration and pollution, and can realize three working modes: driven by only a traditional piston internal combustion engine, driven by only a linear motor, and both working together. It combines the advantages of traditional internal combustion engines and linear motors, and provides new ideas for the research and development of hybrid vehicles.

[0062] The following is a further description of the working process of the three working modes of the new hybrid power unit assembly:

[0063] Mode 1: When the load power is small and the SOC is higher than the preset high threshold value, the cylinder body on which the piston is installed does not work, and the vehicle is driven only by the linear motor, thereby preventing the internal combustion engine from working in a low-efficiency area. In this working state, the battery provides three-phase alternating current to the stator winding 132a of the linear motor through the inverter to generate an air gap magnetic field. This magnetic field is also called a traveling wave magnetic field because it moves in a straight line with the change of the three-phase current. The magnetic field generated by the permanent magnet 132a in the mover mechanism 132 of the linear motor interacts with this traveling wave magnetic field to generate an electromagnetic thrust, which drives the mover mechanism 132 to move. By swapping any two-phase power lines of the linear motor, the mover mechanism 132 can move in the opposite direction, and the cyclic operation can realize reciprocating linear motion, thereby driving the crankshaft 140 to rotate through the second connecting rod 150b to output power to the outside.

[0064] Mode 2: The cylinder with a traditional piston starts working when the power battery SOC is low or the load power is large, and the working process is the same as that of a traditional piston internal combustion engine. At this time, part of the power output of the piston movement is used to drive the vehicle, and the rest of the power is used to charge the power battery.

[0065] The reciprocating motion of the piston 110 drives the crankshaft 140 to rotate, and then drives the mover mechanism 132 of the linear motor to reciprocate, and the coil winding 132a of the stator mechanism 131 cuts the magnetic flux lines, causing electromagnetic induction, generating induced current, and charging the battery. In addition, when the reducer or brake is used, the reverse drag effect of the linear motor can be used, and the linear motor can be used as a generator to generate electricity to charge the battery, and at the same time, the electromagnetic induction phenomenon can be used to generate a braking effect.

[0066] Mode 3: The linear motor and the cylinder body with a traditional piston work simultaneously to drive the crankshaft to rotate. At this time, the working process of the linear motor is the same as the working process of the linear motor alone; the working process of the cylinder body with a traditional piston is the same as the working process of the cylinder body with a traditional piston alone, which will not be repeated here.

[0067] In summary, the new oil-electric hybrid power unit assembly provided by the present invention has a novel and reasonable design, a simple structure, a small size, can output multiple power, and the power output is stable and the energy conversion efficiency is high; it has low pollution, strong practicality, and is easy to promote and use.

[0068] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A hybrid power unit assembly structure, characterized in that: include: The engine body adopts a multi-cylinder gasoline engine body group structure, including a plurality of first cylinder bodies and a plurality of second cylinder bodies; A plurality of pistons, which are disposed in the plurality of first cylinders in a one-to-one correspondence; A valve mechanism, which is used to open or close the intake and exhaust valves of the first cylinder; A plurality of linear motors, which are arranged in the plurality of second cylinder bodies in a one-to-one correspondence; the linear motors include a stator mechanism and a mover mechanism; A crankshaft, which is disposed close to one end of the first cylinder body and the second cylinder body, and is used to output power; a plurality of first connecting rods, one end of which is connected to the plurality of pistons one by one, and the other end of which is connected to the crankshaft to drive the crankshaft to rotate; A plurality of second connecting rods, one end of which is connected to the plurality of movable member mechanisms in a one-to-one correspondence, and the other end of which is connected to the crankshaft; The mover mechanism comprises: a permanent magnet, a supporting connector, a piston pin and a magnetic conductive block; The hybrid power unit assembly structure can realize three working modes. Mode 1 is that the vehicle is driven by the linear motor only, and the crankshaft is driven to rotate and output power externally through the second connecting rod; Mode 2 is to start the work by using the first cylinder of the piston, a part of the power output by the piston movement is used to drive the vehicle, the piston drives the crankshaft to rotate and then drives the mover mechanism of the linear motor to reciprocate, generate induced current and charge the battery; Mode three is that the linear motor and the first cylinder body using a traditional piston work simultaneously to drive the crankshaft to rotate.

2. The oil-electric hybrid power unit assembly structure according to claim 1 is characterized in that: The mover mechanism comprises: A supporting connecting member having a cylindrical shape; A permanent magnet, which is fixedly disposed on the supporting connecting member in a surrounding manner; Wherein, one end of the second connecting rod is rotatably connected to the supporting connecting member.

3. The oil-electric hybrid power unit assembly structure according to claim 2 is characterized in that: A piston pin is installed on the supporting connecting member; one end of the second connecting rod is provided with a connecting sleeve, and the connecting sleeve is rotatably sleeved on the piston pin.

4. The oil-electric hybrid power unit assembly structure according to claim 3 is characterized in that: The stator mechanism comprises: A stator core, fixedly arranged on the inner wall of the second cylinder body; The coil winding is embedded in the stator slot of the stator core.

5. The oil-electric hybrid power unit assembly structure according to claim 4 is characterized in that: The slot fill rate of the stator slots ranges from 70% to 80%.

6. The oil-electric hybrid power unit assembly structure according to claim 4 or 5, characterized in that: The air gap length between the mover mechanism and the stator mechanism is 1 mm.

7. The oil-electric hybrid power unit assembly structure according to claim 6 is characterized in that: Also includes: a bearing bushing fixedly mounted on the other end of the second connecting rod; Wherein, the bearing shell is in rotational clearance fit with the journal of the crankshaft.

8. The oil-electric hybrid power unit assembly structure according to claim 7 is characterized in that: Also includes: A connecting rod cover having a first semi-cylindrical groove; The other end of the second connecting rod has a second semi-cylindrical groove, and the shapes of the first semi-cylindrical groove and the second semi-cylindrical groove match each other; the first semi-cylindrical groove and the second semi-cylindrical groove are arranged opposite to each other, and the connecting rod cover body is detachably connected to the end of the second connecting rod, so that a cylindrical cavity is formed between the connecting rod cover body and the end of the second connecting rod; The bearing shell is arranged in the cylindrical cavity by means of interference fit.

9. The oil-electric hybrid power unit assembly structure according to claim 8, characterized in that: The number of the first cylinder and the number of the second cylinder are respectively two; The two first cylinder bodies are arranged adjacent to each other in the horizontal direction, and the two second cylinder bodies are respectively located on both sides of a connecting body formed by the two first cylinder bodies.

10. The oil-electric hybrid power unit assembly structure according to claim 9, characterized in that: The linear motor adopts a water-cooling cooling method to increase the electromagnetic load of the motor.

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