Cooling system for liquid-cooled engine of motorcycle

Abstract

The utility model relates to a cooling system for a liquid cooling engine of a motorcycle, the motorcycle is at least provided with a power unit, a fan is arranged on one side of the power unit in the width direction, and a radiator is arranged on one side of the fan far away from the power unit. One side of the radiator, which is far away from the fan, is provided with a first covering piece of a primary treatment inlet part with a plurality of openings, and a second covering piece of a secondary treatment inlet part with the opening size and number smaller than those of the primary treatment inlet part and more than those of the primary treatment inlet part is arranged between the first covering piece and the radiator; therefore, sucked air can be rectified gradually in a graded mode, external air can pass through the radiator more smoothly, external hard foreign matter can be isolated gradually in a graded mode, the radiator is prevented from being collided and damaged by the external hard foreign matter, the function of the radiator is improved, and the service life of the radiator is prolonged.

Description

Technical Field

[0001] The utility model relates to a cooling system for a liquid-cooled engine of a motorcycle, and more particularly to a cooling system for a liquid-cooled engine of a motorcycle, which can rectify the inhaled air step by step, so that the outside air can pass through the radiator more smoothly, and can isolate the hard foreign objects from the outside step by step, so as to avoid the radiator from being damaged by the hard foreign objects from the outside, thereby improving the function of the radiator and extending the service life. Background Art

[0002] like Figure 1 As shown, a motorcycle 1 with a liquid-cooled engine is equipped with a radiator 11, and a heat dissipation cover 12 is installed on the outside of the radiator 11; when the engine is running, external cold air can be sucked in through the heat dissipation cover 12 to blow on the radiator 11, so that the radiator 11 can achieve the effect of heat dissipation and cooling.

[0003] The existing radiator 11 has achieved the heat dissipation effect by means of the above-mentioned structure; however, the heat dissipation cover 12 on the outside of the above-mentioned known radiator 11 will also absorb foreign objects from the outside, such as fine sand or stones. When the foreign objects from the outside are sucked in together with the fresh air, the foreign objects from the outside will collide with the heat dissipation fins (not shown in the figure) on the surface of the radiator 11 and damage the heat dissipation fins, which will eventually cause the radiator 11 to dissipate heat poorly. In severe cases, it will cause the engine to dissipate heat poorly and cannot operate normally.

[0004] Therefore, how to provide a cooling system for a liquid-cooled engine of a motorcycle to prevent the cooling fins of the radiator from being damaged by foreign objects has become an urgent issue to be solved by the vehicle industry. Utility Model Content

[0005] [Problems to be Solved by the Utility Model]

[0006] The main purpose of the utility model is to provide a cooling system for a liquid-cooled engine of a motorcycle, which overcomes the defect that the radiator of the existing motorcycle is easily damaged by foreign objects, resulting in a shortened service life.

[0007] [Technical means to solve the problem]

[0008] To this end, the utility model provides a cooling system for a liquid-cooled engine of a motorcycle, the motorcycle having at least a power unit, a fan being provided on one side in the width direction of the power unit, a radiator being provided on the side of the fan away from the power unit, a first cover having a primary treatment inlet portion with a plurality of openings being provided on the side of the radiator away from the fan, and a second cover having a secondary treatment inlet portion with a smaller opening size and a greater number of openings than the primary treatment inlet portion being provided between the first cover and the radiator.

[0009] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the second cover is installed on the first cover at a side of the first cover facing the radiator.

[0010] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the second cover is installed on the radiator at a side of the radiator facing the first cover.

[0011] To this end, some embodiments of the utility model provide a cooling system for a liquid-cooled engine of a motorcycle, wherein a mounting bracket connecting the power unit and the radiator is provided around the outer periphery of the fan, wherein the second cover is mounted on the mounting bracket on a side of the mounting bracket facing the first cover.

[0012] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the second cover is disposed between the first cover and the radiator, and the first three are fastened together by at least one fastener.

[0013] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the second cover is disposed between the first cover and the mounting bracket, and the first three are fastened together by at least one fastener.

[0014] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the multiple openings of the primary processing inlet portion of the first cover are separated by a plurality of air guide grilles. When viewed from above, the air guide grilles extend obliquely forward from a side of the first cover facing the radiator toward a side away from the radiator, and the length of the air guide grilles increases piece by piece from front to back.

[0015] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the multiple openings of the primary processing inlet portion of the first cover are separated by a plurality of air guide grilles, and are arranged so that, when viewed from the side, the air guide grille includes an upper end portion and a lower end portion and a curved portion therebetween, wherein the curved portion is equivalent to or further to the rear of one of the first two in the front-to-rear direction of the power unit.

[0016] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the motorcycle includes a frame unit for mounting the power unit, and a body cover unit covering the frame unit, the power unit is equipped with an exhaust device, an insulating cover is provided on the outside of the exhaust device, the power unit also includes a crankshaft having a central axis, the fan is driven by the crankshaft, and when viewed from above, the projection of the central axis of the crankshaft overlaps and passes through the following components: the first cover, the second cover, the radiator, and the fan; and the first cover can be an independent component or be extended by one of the body cover unit or the insulating cover.

[0017] To this end, some embodiments of the utility model provide a cooling system for a liquid-cooled engine of a motorcycle, wherein a mounting bracket connecting the power unit and the radiator is provided around the outer periphery of the fan, and when viewed from the side, the mounting bracket is provided with an air outlet at one or more of the radial front, bottom, and rear, and when viewed from above, an isolation plate is provided between the fan and the power unit.

[0018] To this end, some embodiments of the present invention provide a cooling system for a liquid-cooled engine of a motorcycle, wherein the outer contour of the secondary processing inlet portion corresponds to one of the following outer contours: the outer contour of the primary processing inlet portion or the outer contour of the radiator.

[0019] [Effects of the utility model]

[0020] The utility model has the following effects: the inhaled air can be rectified step by step so that the outside air can pass through the radiator more smoothly, and hard foreign objects from the outside can be isolated step by step so as to avoid the radiator from being damaged by hard foreign objects from the outside, thereby improving the function of the radiator and extending its service life.

[0021] The utility model has the following effects: the installation and modular design of the second cover can be improved, and the repair and maintenance can be facilitated.

[0022] The utility model has the following effects: the installation of the second cover can be improved, and the repair and maintenance are convenient.

[0023] The utility model has the following effects: the installation and modular design of the second cover can be improved, and the repair and maintenance can be facilitated.

[0024] The utility model has the following effects: the installation performance of the second cover can be improved, and the repair and maintenance can be facilitated.

[0025] The utility model has the following effects: the installation performance of the second cover can be improved, and the repair and maintenance can be facilitated.

[0026] The utility model can achieve the effect of improving the wind guiding effect of the first cover and blocking the large-volume foreign objects from the outside.

[0027] The utility model can achieve the following effects: more outside air can be captured during the running of the motorcycle to fully supply the radiator for cooling; and when the outside air enters the first cover, it can be turned and the outside air can be supplied to the radiator more smoothly for cooling and heat dissipation.

[0028] The utility model can achieve the effect of making each component compact and improving versatility.

[0029] The utility model can achieve the effect of reducing turbulence and stagnant eddy currents, so that hot air can be discharged smoothly, and the cooling efficiency and heat dissipation effect are optimized.

[0030] The utility model can achieve the effect of: making each component compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a side view of a known radiator.

[0032] Figure 2 It is a side view of a motorcycle of the present utility model.

[0033] Figure 3 It is an exploded view of the liquid cooling device of the utility model.

[0034] Figure 4 It is a stereogram of the assembly of the liquid cooling device and the power unit of the utility model.

[0035] Figure 5 It is a top sectional view of the liquid cooling device and the power unit of the utility model.

[0036] Reference numerals list

[0037] 1. Motorcycle

[0038] 11: Radiator 12: Heat dissipation cover

[0039] 2. Motorcycle

[0040] 3: Frame unit

[0041] 31: Head pipe

[0042] 32: Steering mechanism

[0043] 33: Downcomer

[0044] 34: pedal tube 341: pedal cross tube

[0045] 35: Side frame

[0046] 351: Ascending section 352: Extending section

[0047] 353: Auxiliary pipe 354: Extension piece

[0048] 4: Seat cushion

[0049] 5: Storage box

[0050] 6: Power unit

[0051] 61: Cylinder

[0052] 611: Cylinder head cover 612: Cylinder head

[0053] 613: Cylinder body

[0054] 62: Transmission

[0055] 621: Belt stepless speed change system

[0056] 63: Crankcase 631: Crankshaft

[0057] 631a: Crankshaft centerline

[0058] 7: Liquid cooling device

[0059] 71: Fan 72: Isolation board

[0060] 73: Mounting bracket

[0061] 731: Air outlet

[0062] 74: Radiator

[0063] 75: Second cover

[0064] 751: Secondary processing entrance

[0065] 76: First cover

[0066] 761: Primary treatment inlet 762: Air guide grille

[0067] 7621: upper end 7622: lower end

[0068] 7623: Bending part

[0069] 8: Body cover unit

[0070] 81: hood 82: front body cover

[0071] 83: Knee cover 84: Side body cover

[0072] 85: Central body cover

[0073] D: Front fork unit

[0074] E: Foot lever

[0075] M: Exhaust device M1: Insulation cover

[0076] FW: front wheel

[0077] RW: Rear wheel

[0078] P: Footrest

[0079] T: Fuel tank

[0080] S: Fastener. DETAILED DESCRIPTION

[0081] In order to make it easier to understand the structure and effects of the present invention, the following description is provided in conjunction with the accompanying drawings.

[0082] First, see Figure 2 As shown, the motorcycle 2 of the present invention comprises a frame unit 3 , a seat cushion 4 arranged on the frame unit 3 , and a power unit 6 .

[0083] like Figure 2 As shown, the left and right sides of the vehicle body in the following description are defined as the left side of the driver after the driver sits on the motorcycle 2, and the right side of the driver is the left side, and the right side of the driver is the right side, which will be explained first. The front pivot of the frame unit 3 is provided with a head pipe 31, and a steering mechanism 32 is connected to the top of the head pipe 31. The head pipe 31 is connected to a descending pipe 33 toward the rear of the vehicle body, and a pair of left and right footrest pipes 34 extending toward the rear of the vehicle body and slightly horizontal are connected to the bottom of the descending pipe 33. A footrest cross pipe 341 is connected between the end of the descending pipe 33 and the pair of left and right footrest pipes 34; the footrest pipes 34 are extended to the rear of the vehicle with a pair of left and right side frame parts 35, and the side frame parts 35 have a rising section 33 adjacent to the footrest pipes 34. 51 and an extension section 352 located at the rear section of the vehicle body, a pair of left and right auxiliary pipes 353 are arranged between the rising section 351 of the side frame portion 35 and the extension section 352, and a pair of left and right extension members 354 are extended toward the rear of the vehicle body at the rising section 351 adjacent to the footrest pipe portion 34; a front fork unit D composed of a front shock absorber is pivotally provided at the lower part of the head pipe portion 31, and a front wheel FW is pivotally provided at the lower end of the front fork unit D; a footrest rod E which can be freely folded or extended for the passenger to rest his feet is provided on the rising section 351 of the side frame portion 35.

[0084] like Figure 2As shown, a slightly flat footrest P is provided on the slightly horizontal pedal tube portion 34 of the frame unit 3, and the footrest P forms a flat footrest for the driver to rest his feet; a fuel tank T for storing fuel for the power unit 6 to burn is installed in the internal space defined between the left and right slightly horizontal pedal tube portions 34, and the power unit 6 is connected to the frame unit 3 and is located at the fuel tank T and is arranged more toward the rear of the vehicle body.

[0085] like Figure 2 As shown, the side frame portion 35 is provided with a seat cushion 4 for the driver to sit on above the extension section 352, and the side frame portion 35 is provided with a storage box 5 on the extension section 352 and below the seat cushion 4; the power unit 6 is locked to the auxiliary pipe 353 and the extension member 354 of the side frame portion 35, and the power unit 6 is supported on the frame unit 3 in a swingable or non-swinging manner. The power unit 6 of the utility model is implemented by being supported on the frame unit 3 in a swingable manner; the power unit 6 drives the rear wheel RW.

[0086] like Figure 2 , 3 As shown in Figures 4 and 5, the power unit 6 of the engine system of the utility model is an internal combustion engine system; the power unit 6 includes a cylinder portion 61 and a transmission portion 62; an exhaust device M is provided on one side of the power unit 6, and the exhaust device M is extended from the outside of the power unit 6 toward the rear of the vehicle body, and the exhaust device M is provided with a heat insulation cover M1 on the outside along the width direction of the vehicle body; a liquid cooling device 7 is provided on one side of the power unit 6, and the liquid cooling device 7 can be located on the same side of the power unit 6 or on a different side from the exhaust device M; the utility model is illustrated by taking the liquid cooling device 7 and the exhaust device M being located on the same side of the power unit 6 as an example.

[0087] like Figure 2 , 3 As shown in Figures 5 and 6, the cylinder portion 61 extends toward the front of the vehicle body in a slightly inclined manner and partially extends out of the rising section 351 of the side frame portion 35, that is, the portion of the cylinder portion 61 extending toward the front of the vehicle body extends further toward the front of the vehicle body than the rising section 351 of the side frame portion 35; the cylinder portion 61 has a cylinder head cover 611, a cylinder head 612 and a cylinder body 613 in sequence from the front of the vehicle body to the rear of the vehicle body, and the cylinder body 613 is connected to a crankcase 63 containing a crankshaft 631 at one end of the cylinder body 613 facing the lower side of the vehicle body, and the transmission portion 62 is provided on one side of the crankcase 63, and the transmission portion 62 includes a belt stepless speed change system 621.

[0088] like Figure 2As shown, the motorcycle 2 is provided with a body cover unit 8 on the periphery of the frame unit 3, and the body cover unit 8 includes a front cover 81 that can cover part of the steering mechanism 32, a front body cover 82 covered in front of the body, a knee cover 83 located behind the front body cover 82, side body covers 84 located on both sides below the seat cushion 4, and a central body cover 85 located below the seat cushion 4. The central body cover 85 can be formed by extending the side body covers 84 on both sides or be an independent cover.

[0089] like Figure 2 , 3 As shown in Figures 4 and 5, the liquid cooling device 7 is arranged on one side of the motorcycle 2 in the vehicle width direction; that is, the liquid cooling device 7 is arranged on the other side of the power unit 6 where the belt stepless speed change system 621 is arranged. In the embodiment of the utility model, the liquid cooling device 7 is arranged on the same side as the exhaust device M; the liquid cooling device 7 comprises a fan 71 connected to the crankshaft 631 in the crankcase 63, a partition plate 72 arranged between the fan 71 and the crankcase 63, a mounting bracket 73 arranged around the fan 71 and connecting the fan 71 and the crankcase 63, and a mounting bracket 73 arranged outside the mounting bracket 73 along the vehicle width direction. The radiator 74 on the side, the second cover 75 arranged on the outside of the radiator 74 along the width direction of the vehicle body, and the first cover 76 arranged on the second cover 75 along the width direction of the vehicle body; when viewed from the side, the mounting bracket 73 is provided with an air outlet 731 at one or more of the radial front, bottom, and rear; when viewed from the top, the crankshaft centerline 631a of the crankshaft 631 in the crankcase 63 passes through the fan 71, the radiator 74, the second cover 75 and the first cover 76 in a projection overlapping manner, so that the liquid cooling device 7 is assembled on the crankcase 63 of the power unit 6.

[0090] like Figure 2 , 3 As shown in Figures 4 and 5, the fan 71 is driven by the crankshaft 631 to rotate, thereby sucking in fresh cold air from the outside. The fresh cold air from the outside is cooled by the first cover 76 and the second cover 75 in sequence to dissipate heat and cool the radiator 74, and then is discharged toward the rear of the vehicle body through the air outlet 731 of the mounting bracket 73. At the same time, the isolation plate 72 is located between the crankcase 63 of the power unit 6, so that turbulence or stagnation of the fresh cold air from the outside sucked in by the fan 71 can be avoided, so that the fresh cold air can be smoothly discharged toward the rear of the vehicle body through the air outlet 731 of the mounting bracket 73. To be more specific, the fresh cold space of the utility model enters the liquid cooling device 7 from the vehicle width direction to cool the radiator 74, and then discharges the high-temperature hot air after heat dissipation in a longitudinal manner in the front and rear of the vehicle body.

[0091] like Figure 2 , 3As shown in Figures 4 and 5, in the embodiment of the utility model, the second cover 75 can be installed on the first cover 76 on the side of the first cover 76 facing the radiator 74, and the second cover 75, the first cover 76 and the radiator 74 can be fastened together by a fastener S. The utility model can also implement the fastening method of the second cover 75, the first cover 76 and the radiator 74 together by screwing, clamping, snapping, magnetizing, welding, gluing, etc., and the following embodiments are the same; in the implementation of the utility model, the fastener S does not pass through the second cover 75, and the second cover 75 is fastened by the first cover 76. A cover 76 is clamped with the radiator 74 to fasten the second cover 75, the first cover 76 and the radiator 74 together; the second cover 75 can be installed on the radiator 74 on the side of the radiator 74 facing the first cover 76, and further, a fastener S can be used to fasten the second cover 75, the first cover 76 and the radiator 74 together; the second cover 75 can be installed on the mounting bracket 73 on the side of the mounting bracket 73 facing the radiator 74, and further, a fastener S can be used to fasten the second cover 75, the mounting bracket 73 and the radiator 74 together.

[0092] like Figure 2 , 3 , 4, and 5, in an embodiment of the utility model, the first cover member 76 is provided with a primary processing inlet portion 761 for circulating fresh cold air from the outside, and the primary processing inlet portion 761 is designed to have a plurality of openings; a specific embodiment of the utility model is to provide a plurality of air guide grilles 762 along the up and down directions of the vehicle body on the primary processing inlet portion 761, and to divide the primary processing inlet portion 761 into a plurality of openings by means of the plurality of air guide grilles 762; the width and length of the plurality of air guide grilles 762 are not the same, and are extended obliquely forward toward the side of the radiator 74, and the plurality of air guide grilles 762 are designed to include an upper end portion 7621, a lower end portion 7622 and a bent portion 7623, wherein the bent portion 7623 is at the In the front-to-rear direction of the power unit 5, it is equivalent to or further rearward than one of the first two air guide grilles 762; more specifically, viewed from a top view, the width of the plurality of air guide grilles 762 along the width direction of the vehicle body toward the rear is greater than the width toward the front of the vehicle body, and the length along the up-down direction of the vehicle body toward the rear is greater than the length toward the front of the vehicle body; thereby, the air guiding effect of the first cover 76 can be improved, and at the same time, the primary processing inlet 761 of the first cover 76 can block larger foreign objects from entering the liquid cooling device 7 and damaging the radiator 74; in a further embodiment of the present invention, the first cover 76 can be formed by an extension of a component of the vehicle body cover unit 8, or by an extension of the heat insulation cover M1, or by an independent single component.

[0093] like Figure 2 , 3 As shown in Figures 4 and 5, in the embodiment of the utility model, the second cover 75 has a secondary processing inlet portion 751 that allows fresh cold air from the outside to pass through a smaller opening diameter than the primary processing inlet portion 761 of the first cover 76, and the outer contour of the secondary processing inlet portion 751 corresponds to one of the outer contours, such as the outer contour of the primary processing inlet portion 761 or the outer contour of the radiator 74; the secondary processing inlet portion 751 has a smaller opening diameter for fresh cold air from the outside to pass through, so when foreign matter from the outside passes through the primary processing inlet portion 761 of the first cover 76, it can be blocked by the secondary processing inlet portion 751, thereby, on the one hand, allowing fresh cooling air from the outside to pass freely and smoothly through the secondary processing inlet portion 751 to cool the radiator 74, and on the other hand, smaller foreign matter from the outside can be blocked, thereby preventing the radiator 74 from being damaged by foreign matter from the outside, thereby improving the use effect of the radiator 74.

[0094] The utility model has the effect that a motorcycle 2 at least has a power unit 6, a fan 71 is provided on one side of the power unit 6 in the width direction, a radiator 74 is provided on the side of the fan 71 away from the power unit 6, a first cover 76 with a primary processing inlet 761 having a plurality of openings is provided on the side of the radiator 74 away from the fan 71, and a second cover 75 with a secondary processing inlet 751 having a smaller opening size and a larger number of openings than the primary processing inlet 761 is provided between the first cover 76 and the radiator 74; thereby, the inhaled air can be rectified step by step, so that the outside air can pass through the radiator 74 more smoothly, and hard foreign objects from the outside can be isolated step by step to prevent the radiator 74 from being damaged by hard foreign objects from the outside, thereby improving the function of the radiator 74 and extending the service life.

[0095] In summary, the present invention can improve the known shortcomings and achieve the desired purpose through the above-mentioned structure, and has indeed improved the efficacy compared with the existing ones. It is obvious that it has novelty, practicality and creativity.

Claims

1. A cooling system for a liquid-cooled engine of a motorcycle, characterized in that: The motorcycle has at least a power unit, a fan is provided on one side in the width direction of the power unit, a radiator is provided on the side of the fan away from the power unit, a first cover having a primary processing inlet portion with multiple openings is provided on the side of the radiator away from the fan, and a second cover having a secondary processing inlet portion with a smaller size and a larger number of openings than the primary processing inlet portion is provided between the first cover and the radiator.

2. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The second cover is mounted on the first cover at a side of the first cover facing the radiator.

3. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The second cover is mounted on the radiator at a side of the radiator facing the first cover.

4. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: A mounting bracket connecting the power unit and the radiator is arranged around the outer periphery of the fan, wherein the second cover is mounted on a mounting bracket on a side of the mounting bracket facing the first cover.

5. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The second cover is disposed between the first cover and the heat sink, and the first three are fastened together by at least one fastener.

6. The cooling system for a liquid-cooled engine of a motorcycle according to claim 4, characterized in that: The second cover is disposed between the first cover and the mounting bracket, and the first three are fastened together by at least one fastener.

7. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The multiple openings of the primary processing inlet portion of the first cover are separated by a plurality of air guide grilles; viewed from a top view, the air guide grilles extend obliquely forward from the side of the first cover facing the radiator to the side away from the radiator, and the length of the air guide grilles increases piece by piece from front to back.

8. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The multiple openings of the primary processing inlet portion of the first cover are separated by multiple air guide grilles, and are arranged so that when viewed from the side, the air guide grilles include an upper end portion, a lower end portion and a curved portion therebetween, wherein the curved portion is equivalent to or further to the rear of one of the first two in the front-to-rear direction of the power unit.

9. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The motorcycle includes a frame unit for installing the power unit and a body cover unit covering the frame unit. The power unit is installed with an exhaust device, and a heat insulation cover is provided on the outside of the exhaust device. The power unit also includes a crankshaft with a central axis. The fan is driven by the crankshaft. When viewed from above, the projection of the central axis of the crankshaft overlaps and passes through the following components: the first cover, the second cover, the radiator, and the fan; and the first cover can be an independent part or be extended by one of the body cover unit or the heat insulation cover.

10. The cooling system for a liquid-cooled engine of a motorcycle according to claim 9, characterized in that: A mounting bracket connecting the power unit and the radiator is arranged around the outer periphery of the fan. When viewed from the side, the mounting bracket is provided with air outlets at one or more of the radial front, bottom, and rear. When viewed from the top, an isolation plate is arranged between the fan and the power unit.

11. The cooling system for a liquid-cooled engine of a motorcycle according to claim 1, characterized in that: The outer contour of the secondary processing inlet portion corresponds to one of the following outer contours: the outer contour of the primary processing inlet portion or the outer contour of the radiator.

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