Front-end driving system of automobile transverse engine

Abstract

The invention provides a front end driving system of an automobile transverse engine, and belongs to the technical field of automobile engine structures. According to the system, through the structural design of the timing belt tensioning part and the transmission belt tensioning part, the problems that in the prior art, a tensioning device of an automobile engine is relatively complex in structure, and many auxiliary tools are needed during installation and maintenance are solved. The timing belt tensioning part comprises a first adjusting column which is fixedly installed; the adjusting seat is provided with a first adjusting groove, and the first adjusting column is movably sleeved with the first adjusting groove; the tensioning wheel is rotationally arranged on the adjusting seat in a sleeving manner, and the outer wall of the tensioning wheel is matched with the transmission belt; the first fixing piece is used for fixedly mounting the adjusting seat; the transmission belt tensioning part comprises a second adjusting column, one side of the generator is movably connected, and the other side of the generator is fixedly provided with the second adjusting column; the adjusting plate is fixedly connected to the water pump, a second adjusting groove is formed in the adjusting plate, and the second adjusting column is movably installed in the second adjusting groove; and the second fixing piece is used for fixedly mounting the generator.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile engine structures, and in particular relates to a front-end drive system of a transversely mounted automobile engine. Background Art

[0002] For commercial vehicles like minivans and light buses, the engine must balance economy, low maintenance, and reliability, so a transversely mounted gasoline engine is generally chosen. The timing belt pulley and front-end drive train are located on the same side of the crankshaft, forming the front-end drive system.

[0003] The timing pulley system is the core component of the engine's valvetrain. Its main function is to precisely control the opening and closing moments of the intake and exhaust valves (i.e., valve timing), while driving other auxiliary devices (such as water pumps, generators, and oil pumps). It is the "heart metronome" of the engine and directly determines the accuracy of valve timing and engine life. The intake camshaft, exhaust camshaft, tensioner, idler, and crankshaft timing sprocket are key components of the engine's timing train. They work together to ensure the accuracy and reliability of valve timing. The front-end drive train is a power transmission system consisting of a driving pulley (crankshaft pulley), a water pump pulley, a generator pulley, a drive belt, and a tensioner. Its core function is to drive auxiliary equipment (such as water pumps, generators, and oil pumps) to ensure engine cooling, power supply, and lubrication.

[0004] Timing pulley systems typically use a toothed belt meshing with sprocket teeth to ensure precise transmission; front-end drive systems often use V-belts, which drive multiple accessories through friction. The timing pulley system transmits power via the crankshaft timing sprocket, while the front-end drive system transmits power via the crankshaft pulley. The tensioner is a critical working component for both. If the timing pulley system's tensioner fails, it can cause the front-end drive system's V-belt to shift its path, potentially increasing engine vibrations that are ultimately transmitted to the front-end drive system and causing premature wear of the V-belt. Similarly, a failure in the front-end drive system's tensioner can also cause interference between the toothed and V-belts.

[0005] In existing technology, the tensioner in the timing pulley system is controlled by springs, hydraulics, or electronics. The tensioner in the front-end drive train typically consists of a spring-loaded idler pulley or a hydraulic tensioner. These tensioners typically include additional components, resulting in a relatively complex structure. Installation, maintenance, and adjustment require specialized tools such as torque wrenches, specialized positioning tools, and tensioner push rods. For commercial vehicles marketed as economical and practical, these tensioner structures, while effective, can be effective, but at a high cost. Furthermore, considering the user demographic and specific scenarios for these commercial vehicles, the vehicle's maintainability must be maximized, requiring minimal tool use during repairs. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a front-end drive system for a transversely mounted automobile engine, which is used to solve the problem that the tensioning device structure of the automobile engine in the prior art is relatively complex and requires many auxiliary tools during installation and maintenance.

[0007] To achieve the above-mentioned and other related objectives, the present invention provides a front-end drive system for a transversely mounted automobile engine, comprising a timing pulley system and a front-end drive pulley system mounted on the same side of a crankshaft; the timing pulley system includes a timing belt tensioner for adjusting the tension of a timing belt, and the front-end drive pulley system includes a drive belt tensioner for adjusting the tension of a drive belt;

[0008] The timing belt tensioning portion comprises:

[0009] The first adjustment column is fixedly installed;

[0010] The adjustment seat is provided with a first adjustment slot, wherein the first adjustment slot is movably mounted on the first adjustment column;

[0011] A tensioning wheel is rotatably mounted on the adjustment seat, and an outer wall of the tensioning wheel is matched with the transmission belt;

[0012] A first fixing member, for fixing and installing the adjustment seat;

[0013] The transmission belt tensioning portion comprises:

[0014] a second adjustment column, movably connected to one side of the generator and fixedly mounted on the other side;

[0015] an adjustment plate fixedly connected to the water pump, having a second adjustment slot formed thereon, wherein the second adjustment column is movably mounted in the second adjustment slot;

[0016] The second fixing member is used to fix and install the generator.

[0017] As described above, the front-end drive system for a transversely mounted automobile engine of the present invention has at least the following beneficial effects:

[0018] The front-end drive system of the transverse engine of the present automobile is composed of a timing belt tensioning part consisting of a fixed first adjusting column, an adjusting seat with a first adjusting slot in the middle, a tensioning wheel mounted on the adjusting seat and a first fixing piece for fixing the adjusting seat, and a structural design in which the first adjusting slot is movably mounted on the first adjusting column. Not only is the structure simple, but when installing or repairing the timing belt tensioning part, the staff only needs to use a crowbar to support the tensioning wheel, and the tensioning wheel moves the adjusting seat along the length direction of the adjusting slot to the correct position. At this time, the first adjusting column plays a role of limiting, and then the first fixing piece can be installed. The operation is simple and does not require the use of special tools. At the same time, the second adjusting column is fixedly installed on the other side through a movably connected one side of the generator. An adjustment plate is fixed to the water pump, and a second adjustment slot is provided on the adjustment plate. The second adjustment column is movably installed in the second adjustment slot. The second fixing piece is used to fix the generator to the structural design. Only an additional adjustment plate is added to realize the function of the transmission belt tensioning part, and no additional components are needed. Moreover, when installing or repairing the transmission belt tensioning part, the staff only needs to move the motor to allow the second adjustment column to move to the correct position in the second adjustment slot, and then fix the motor through the second fixing piece. The operation is simple and does not require additional tools. In summary, the structural design of the front-end drive system of the transverse engine of this automobile solves the problem that the tensioning device structure of the automobile engine in the prior art is relatively complex and requires more auxiliary tools during installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of a front-end drive system for a transversely mounted engine of an automobile according to the present invention.

[0020] Figure 2 Shown is a schematic diagram of the timing pulley system of the present invention.

[0021] Figure 3 Shown is a schematic diagram of the timing belt tensioner of the present invention.

[0022] Figure 4 Shown is a schematic diagram of the front end drive train of the present invention.

[0023] Component number description

[0024] Timing pulley system 1, timing belt tensioning portion 11, first adjustment column 111, adjustment seat 112, first adjustment slot 113, tensioning pulley 114, first fixing member 115, auxiliary plate 116, positioning hole 117, auxiliary positioning slot 118, support seat 119, timing belt 12, crankshaft timing pulley 13, intake pulley 14, exhaust pulley 15, idler pulley 16;

[0025] Front end transmission gear train 2, transmission belt tensioning part 21, second adjustment column 211, adjustment plate 212, second adjustment slot 213, second fixing member 215, transmission belt 22, water pump wheel 23, generator wheel 24, crankshaft driving pulley 25. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] See also Figures 1 to 4 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0028] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0029] See also Figure 1 The present invention provides a front-end drive system for a transversely mounted automobile engine. Like the prior art, the front-end drive system also includes a timing belt pulley system 1 and a front-end drive pulley system 2 installed on the same side of the crankshaft. The timing belt pulley system 1 includes a timing belt tensioning portion 11 for adjusting the tension of a timing belt 12, and the front-end drive pulley system 2 includes a drive belt tensioning portion 21 for adjusting the tension of a drive belt 22. The following will respectively discuss the differences between the timing belt tensioning portion 11 and the drive belt tensioning portion 21 from the prior art.

[0030] We first introduce the timing belt tensioning unit 11, which includes:

[0031] like Figure 2 and Figure 3 The first adjustment column 111 shown is fixedly installed.

[0032] like Figure 3 The adjustment seat 112 is provided with a first adjustment slot 113 , and the first adjustment slot 113 is movably mounted on the first adjustment post 111 .

[0033] like Figure 3 The tensioning wheel 114 shown is rotatably mounted on the adjustment seat 112 , and the outer wall of the tensioning wheel 114 cooperates with the transmission belt 22 .

[0034] like Figure 3 The first fixing member 115 shown is used to fix the adjustment seat 112 .

[0035] The above-mentioned timing belt tensioning part 11 is not only simple in structure, but also when installing or repairing the timing belt tensioning part 11, the staff only needs to use a crowbar to support the tensioning wheel 114, and the tensioning wheel 114 moves along the length direction of the adjustment groove with the adjustment seat 112 to the correct position. At this time, the first adjustment column 111 plays a limiting role, and then the first fixing part 115 can be installed. The operation is simple and does not require the use of special tools.

[0036] Next, we introduce the transmission belt tensioning unit 21, which includes:

[0037] like Figure 4 The second adjustment column 211 shown is movably connected to one side of the generator, and the second adjustment column 211 is fixedly installed on the other side.

[0038] like Figure 4 The adjustment plate 212 is fixed to the water pump and is provided with a second adjustment slot 213 . The second adjustment column 211 is movably mounted in the second adjustment slot 213 .

[0039] like Figure 4 The second fixing member 215 shown is used to fix the generator.

[0040] The above-mentioned transmission belt tensioning part 21 only needs to add an additional adjustment plate 212 to realize the function of the transmission belt tensioning part 21, and no additional parts are needed. At the same time, when installing or repairing the transmission belt tensioning part 21, the staff only needs to bend the motor to allow the second adjustment column 211 to move to the correct position in the second adjustment groove 213, and then fix the motor through the second fixing member 215. The operation is simple and does not require additional tools.

[0041] In summary, the structural design of the timing belt tensioner 11 and the transmission belt tensioner 21 ensures that the front-end drive system of the transverse engine of the present automobile no longer faces the problem that the tensioner structure of the automobile engine in the prior art is relatively complex and requires many auxiliary tools during installation and maintenance.

[0042] In another embodiment, see Figure 2 and Figure 3The bottom side of the adjustment seat 112 is fixedly connected to an auxiliary plate 116, and a positioning hole 117 is provided on the auxiliary plate 116. The movable trajectory of the adjustment seat 112 is a circular arc motion with the center of the positioning hole 117 as the center of the circle, that is, the tensioning wheel 114 is a circular arc motion with the center of the positioning hole 117 as the center of the circle. When the operator uses the common pry bar in the workshop, the positioning hole 117 is the fulcrum of the pry bar, and the staff can more easily adjust the tensioning wheel 114 into place. A positioning pin can be installed in the positioning hole 117 to connect the auxiliary plate 116 and the engine body.

[0043] In another embodiment, see FIG. Figure 2 and Figure 3 An auxiliary positioning groove 118 is also provided on the auxiliary plate 116. The auxiliary positioning groove 118 and the positioning hole 117 are respectively located at both ends of the auxiliary plate 116. When the staff installs the timing belt tensioning part 11, a tension spring can be used to assist in the installation. One end of the tension spring hooks the auxiliary positioning groove 118, and the other end of the tension spring hooks a place on the engine body that can be hooked, such as a certain fastening bolt, etc. The auxiliary positioning groove 118 is simple to process, but can play a very good auxiliary role during installation.

[0044] In another embodiment, see Figure 3 The tensioning wheel 114 is rotatably mounted on the adjustment seat 112 via a bearing, thereby reducing the friction of the tensioning wheel 114 as much as possible.

[0045] In another embodiment, see FIG. Figure 2 and Figure 3 The timing belt tensioning portion 11 also includes a support seat 119, which is fixedly mounted on the engine body, and the first adjustment column 111 is fixedly mounted on the support seat 119; the upper portion of the first adjustment column 111 is provided with a thread, and the first fixing member 115 is a nut; the adjustment seat 112 is fixed by tightening the nut on the first adjustment column 111; this embodiment provides a relatively stable structural form in which the first fixing member 115 fixes the first adjustment column 111.

[0046] In another embodiment, see FIG. Figure 4 One side of the generator is hinged to the engine body, and the second adjustment slot 213 is an arc-shaped slot; when the generator rotates around one side thereof, the moving trajectory of the second adjustment column 211 is along the arc-shaped trajectory of the second adjustment slot 213; similarly, this embodiment provides a specific structural form for the rotation of the motor in the transmission belt tensioning portion 21, and the second adjustment slot 213 is designed as an arc-shaped slot. The moving trajectory of the second adjustment column 211 is along the arc-shaped trajectory of the second adjustment slot 213. Compared with linear motion, the motion is smoother, easier to implement, and less likely to cause interference.

[0047] In another embodiment, see Figure 4 The second fixing member 215 and the first fixing member 115 are both nuts. The second adjustment column 211 is also provided with a thread. The generator is fixed by tightening the nut on the second adjustment column 211. The fixing method of the nut is simple, and the nut is a standard part, which is easy to operate during installation or maintenance.

[0048] In another embodiment, see Figure 3 and Figure 4 , the timing belt 12 is toothed, which transmits the power of the crankshaft to the intake camshaft and the exhaust camshaft; the timing pulley system 1 also includes: a crankshaft timing pulley 13, which is mounted on the crankshaft and meshes with the timing belt 12, and is the source of power; an intake pulley 14, which is mounted on the intake camshaft and meshes with the timing belt 12, controls the opening and closing of the intake valve; an exhaust pulley 15, which is mounted on the intake camshaft and meshes with the timing belt 12, controls the opening and closing of the exhaust valve; the timing pulley system 1 is the "heart metronome" of the engine, which directly determines the valve timing accuracy and engine life. Its core value lies in low cost, low noise and lightweight, but it requires regular maintenance to avoid the risk of belt breakage; at the same time, the timing pulley system 1 also drives other auxiliary devices, such as a water pump, a generator and an oil pump.

[0049] In another embodiment, see Figure 2 The crankshaft timing pulley 13 has an even number of teeth, specifically 18 teeth; the number of teeth of the intake pulley 14 and the exhaust pulley 15 are both twice that of the crankshaft timing pulley 13, that is, 36 teeth; the number of teeth of the timing belt 12 is an odd number, and the force is more uniform compared to the timing belt 12 with an even number of teeth; at the same time, because the even-numbered timing belt 12 is combined with the odd-numbered belt, the meshing period is asymmetric, which can effectively reduce the risk of resonance.

[0050] In another embodiment, see Figure 4 The transmission belt 22 is wedge-shaped, transmitting the power of the crankshaft to the water pump wheel 23 on the water pump and the generator wheel 24 on the generator; the front-end transmission gear train 2 includes a crankshaft driving pulley 25, which is installed on the crankshaft and cooperates with the transmission belt 22; ensuring the reliable realization of the engine's cooling, power supply and lubrication functions.

[0051] In other embodiments, Figure 2 As shown, the timing pulley system 1 further includes an idler pulley 16 to change the direction of the timing belt 12, reduce friction, and prevent the timing belt 12 from being directly wound around other components.

[0052] In summary, the present invention comprises a timing belt tensioning portion 11 consisting of a fixedly installed first adjusting column 111, an adjusting seat 112 with a first adjusting slot 113 in the middle, a tensioning wheel 114 mounted on the adjusting seat 112, and a first fixing piece 115 for fixing the adjusting seat 112, and a structural design in which the first adjusting slot 113 is movably mounted on the first adjusting column 111. Not only is the structure simple, but when installing or repairing the timing belt tensioning portion 11, the staff only needs to use a crowbar to support the tensioning wheel 114, and the tensioning wheel 114 moves the adjusting seat 112 along the length direction of the adjusting slot to the correct position. At this time, the first adjusting column 111 plays a limiting role, and then the first fixing piece 115 can be installed. The operation is simple and does not require the use of special tools. At the same time, the second adjusting column is movably connected on one side of the generator and fixedly installed on the other side. 211, an adjustment plate 212 is fixed to the water pump, and a second adjustment slot 213 is defined on the adjustment plate 212. A second adjustment column 211 is movably mounted in the second adjustment slot 213. A second fixing member 215 secures the generator to the structure. This structural design achieves the function of the transmission belt tensioner 21 by simply adding the adjustment plate 212, eliminating the need for additional components. Furthermore, when installing or repairing the transmission belt tensioner 211, a worker simply moves the motor to allow the second adjustment column 211 to move to the correct position in the second adjustment slot 213, and then secures the motor with the second fixing member 215. This is a simple operation that requires no additional tools. In summary, the structural design of the front-end drive system for a transversely mounted automobile engine solves the problem of the relatively complex structure of the tensioner device in the prior art, which requires a large number of auxiliary tools for installation and repair. Therefore, the present invention effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A front-end drive system for a transversely mounted automobile engine, comprising a timing pulley system and a front-end drive pulley system mounted on the same side of a crankshaft; the timing pulley system including a timing belt tensioner for adjusting the tension of the timing belt, and the front-end drive pulley system including a drive belt tensioner for adjusting the tension of the drive belt; characterized in that: The timing belt tensioning portion comprises: The first adjustment column is fixedly installed; The adjustment seat is provided with a first adjustment slot, wherein the first adjustment slot is movably mounted on the first adjustment column; A tensioning wheel is rotatably mounted on the adjustment seat, and an outer wall of the tensioning wheel is matched with the transmission belt; A first fixing member, for fixing and installing the adjustment seat; The transmission belt tensioning portion comprises: a second adjustment column, movably connected to one side of the generator and fixedly mounted on the other side; an adjustment plate fixedly connected to the water pump, having a second adjustment slot formed thereon, wherein the second adjustment column is movably mounted in the second adjustment slot; The second fixing member is used to fix and install the generator.

2. The front-end drive system for a transversely mounted automobile engine according to claim 1, characterized in that: An auxiliary plate is fixedly connected to the bottom side of the adjustment seat. A positioning hole is provided on the auxiliary plate. The movable trajectory of the adjustment seat is an arc motion with the center of the positioning hole as the center of the circle.

3. The front-end drive system for a transversely mounted automobile engine according to claim 2, characterized in that: The auxiliary plate is further provided with an auxiliary positioning groove, and the auxiliary positioning groove and the positioning hole are respectively located at two ends of the auxiliary plate.

4. The front-end drive system for a transversely mounted automobile engine according to claim 1, characterized in that: The tensioning wheel is rotatably mounted on the adjustment seat via a bearing.

5. The front-end drive system for a transversely mounted automobile engine according to claim 1, characterized in that: The timing belt tensioning portion further comprises a support base, the support base is fixedly mounted on the engine body, and the first adjustment column is fixedly mounted on the support base; The upper portion of the first adjustment column is provided with a thread, and the first fixing member is a nut; The adjustment seat is fixed by tightening a nut on the first adjustment column.

6. The front-end drive system for a transversely mounted automobile engine according to claim 1, characterized in that: One side of the generator is hinged to the engine body, and the second adjustment groove is an arc groove; When the generator rotates around one side thereof, the moving track of the second adjustment post is an arc track along the second adjustment slot.

7. The front-end drive system for a transversely mounted automobile engine according to claim 5, characterized in that: The second fixing member and the first fixing member are both nuts, and the second adjustment column is also provided with a thread. The nut is tightened on the second adjustment column to fix the generator.

8. The front-end drive system for a transversely mounted automobile engine according to claim 1, characterized in that: The timing belt is toothed and transmits the power of the crankshaft to the intake camshaft and the exhaust camshaft; The timing pulley system further includes: a crankshaft timing pulley, mounted on the crankshaft and meshing with the timing belt; An intake pulley, mounted on the intake camshaft and meshing with the timing belt, controls the opening and closing of the intake valve; The exhaust pulley is mounted on the intake camshaft and meshes with the timing belt to control the opening and closing of the exhaust valve.

9. The front end drive system of a transversely mounted automobile engine according to claim 8, characterized in that: The crankshaft timing pulley has an even number of teeth, the intake pulley and the exhaust pulley have twice the number of teeth of the crankshaft timing pulley, and the timing belt has an odd number of teeth.

10. The front end drive system of a transversely mounted automobile engine according to claim 1, characterized in that: The transmission belt is wedge-shaped and transmits the power of the crankshaft to the water pump wheel on the water pump and the generator wheel on the generator; The front-end transmission gear train includes a crankshaft driving pulley, which is installed on the crankshaft and cooperates with the transmission belt.

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