TECHNICAL FIELD
[0001] The present subject matter generally relates to a vehicle. More
particularly but not exclusively the present subject matter relates to speed sensor bracket for said vehicle.
BACKGROUND
[0002] With the development of the engine, people are more and more demanding for the performance of the automobile, and pay. more attention to the off-road performance of the vehicle, and require the vehicle to adapt to various roads. [0003] For better performance of the engine the air coming from outside should be cleaner with minimum amount of foreign material. The oil traps fine particles in the air that passes through the air filter and then into the engine. [0004] The air filter chamber comes in different shapes and size. For each of such shapes the drain oil gets collected in a drain tube provided with the air filter chamber. The location of the drain tube determines the ease of serviceability.
BRIEF DESCRDTTION OF THE DRAWINGS
[0005] Figure 1 illustrates a side view of the exemplary two-wheeled vehicle, in
accordance with an embodiment of the present subject matter.
[0006] Figure 2 illustrates rear isometric view of the crank case assembly with a
drain tube.
[0007] Figure 3 illustrates another isometric view of the crank case assembly
without a drain tube.
[0008] Figure 4 illustrated the sectional view of the present subject matter and the
crankcase assembly.
[0009] Figure 5 illustrates the top perspective view of the crankcase assembly with
a gear box.
[00010] Figure 6 illustrates the exploded view of the present subject matter.
[00011] Figure 7 illustrates the assembly of the speed sensor with the speed sensor
bracket and the speed sensor cable.

DETAILED DESCRIPTION
[00012] In order to save time and money it is equally important that the air
filter needs to be taken out during servicing less frequently. Simultaneously, in order to reduce the requirement of servicing of the vehicle the drain tube which collects the drain oil needs to be longer.
[00013] For air filter chamber of cartridge shape needs the drain tube to be
located on the rear end of the air filter chamber .The oil drain tube remains hidden behind the mud guard and the crankcase assembly. In order to repair or to replace the oil drain tube a person has to sense the presence of the drain tube with the hand but its non-visibility makes the service of the drain tube difficult. So, by increasing the length of the oil drain tube solves the problem and it also increases the serviceability. But the increased length of the oil drain tube for easy access gives rise to another problem where the oil drain tube starts touching the crank case. Because of the increased length of the drain tube the crank case surface comes in contact which increases the chances of damaging the oil drain tube material due to excessive heat or it may get damaged by getting hit from the neighboring components. Therefore, it is important to provide a supporting structure which prevents the oil drain tube from getting damaged due to heat and to keep the oil drain tube at one position.
[00014] Hence, it is the object of the present subject matter to provide a mean
to prevent the oil drain tube from touching the heated crank case
[00015] Another objective of the present invention is to provide a speed
sensor bracket with an upper flange and a bottom flange which creates a channel with the bracket to accommodate the oil drain tube. The upper flange and the bottom flange of the bracket provides support to the elongated part of the drain tube and keeps from moving from its actual position.
[00016] Fig. 1 illustrates a left side view of an exemplary motor vehicle
(100), in accordance with an embodiment of the present subject matter. The vehicle (100) illustrated, has a frame member (105). In the present embodiment, the frame member (105) is step-through type including a head tube (105A), and a main frame (105B) that extend rearwardly downward from an anterior portion of the head tube

(105A). The main frame (105B) extends inclinedly rearward to a rear portion of the
vehicle (100).
[00017] The vehicle (100) includes one or more prime movers that are
■ connected to the frame member (105). In the present implementation, one of the prime movers is an internal combustion (IC) engine (115) mounted to the frame member (105). In the depicted embodiment, the IC engine (115) is mounted to a structural member (135) that is pivoted to the frame member (105). In one embodiment, the structural member (135) is a rigid member made of metal. The vehicle (100) also includes another prime mover, which is an electric motor (120). In a preferred embodiment, the electric motor (120) is hub mounted to one wheel of the vehicle (100). In another embodiment, more than one electric motor is mounted to wheels of the vehicle. In the depicted embodiment, the vehicle (100) includes at least two-wheels and the electric motor (120) is hub mounted to the rear wheel (125) of the vehicle. A front wheel (110) is rotatably supported by the frame member (105) and is connected to a handle bar assembly (130) that enables maneuvering of the vehicle (100).
[00018] Further, the vehicle (100) includes a high capacity on-board battery
(not shown) that drives the electric motor (120). The high capacity battery may
include one or more high capacity battery packs or one or more low capacity cells.
The high capacity battery can be disposed at a front portion, a rear portion, or at the
center of the vehicle (100). The high capacity battery is supported by the frame
member (105) and the vehicle (100) includes plurality of body panels, mounted to
the frame member (105) for covering various components of the vehicle (100). The
plurality of panels includes a front panel (140A), a leg shield (140B), an under-seat
cover (140C), and a left and a right-side panel (HOD). A glove box may be mounted
to a leg shield (HOB).
[00019] A floorboard (145) is provided at the step-through portion defined
. by the main tube (105B). A seat assembly (150) is disposed rearward to the step-through portion and is mounted to the main frame (105B). The seat assembly (150) that is elongated in a longitudinal direction F-R of the vehicle (100) enables the user to operate the vehicle in a saddle ride-type posture. One or more suspension(s)

connect the wheels (110), (125) to the vehicle (100) and provide a comfortable ride. The vehicle (100) comprises of plurality of electrical and electronic components including a headlight (155A), a taillight (155B), a starter motor (not shown), a horn etc. Also, the vehicle (100) includes a master control unit (not shown) that takes control of the overall operation of the vehicle (100) including the function of the IC engine (115), the electric motor (120), charging of the batteries from a magneto/integrated starter generator (ISG), driving of loads by the magneto/ISG, charging of the high capacity batteries by the electric motor operating in generator mode, and any other operations associated with the operation of the vehicle (100). The vehicle (100) shown in fig. 1 is an exemplary vehicle and the present subject matter can be used in a two-wheeled vehicle, three-wheeled vehicle or a four-wheeled vehicle.
[00020] Fig. 2 shows a portion of the right rear perspective view of the vehicle (100) where an engine assembly (200) comprising a drive shaft (206) is visible. A rear wheel (not shown) is mounted onto the drive shaft (206). The drive shaft (206) forms a part of the power train of the vehicle (100). The drive shaft (206) is disposed in a power transmitting assembly such that the drive shaft (206) transmits the power' of the engine through a crankshaft to the rear wheel in order to set the vehicle (100) in motion.
[00021] The vehicle (100) is provided with a swing arm which is pivotally supported by the pivoting means to the body frame. A crankcase assembly provides a crank case (204). The crank case (204) comprises of an upper crank case (not ' shown) and a lower crank case (not shown), A crankshaft with an input shaft (not shown) and an output shaft of the transmission system. The output shaft is the drive shaft (206) on to which the rear wheel is mounted. The crankcase assembly is provided with a crankcase brake mounting means (205) to mount a cam of a brake . assembly.
[00022] An engine for accommodating a transmission gear having a plurality
of speed change gear trains arranged there between. A rear mud guard (201) covers the rear portion of the vehicle (100) and simultaneously providing an ease of assembly of the speed sensor (300). A vent hose (207) provided on the gear box to

take in the hydrocarbon gaseous matter. The hydrocarbon gaseous matter
evaporates due to heat in the engine and the heat pushes the evaporated hydrocarbon
gas in an upward direction and then the gas molecules passes through the vent hose
(207). From the vent hose (207) the hydrocarbons gas molecules travel to the air
filter chamber (208) which comprises of a post filter allowing the hydrocarbons to
get filtered out and the filtered air goes back to the combustion chamber.
[00023] The crankcase vent tube (211) is inserted into the vent hose (207).
The crankcase vent tube (211) and the vent hose (207) are held together with a hose
clip (210) in order to provide firm grip to the vent hose (207) on the crankcase vent
tube (211). The vent (207) hose is then routed to the air filter chamber (208) through
a perforation (not shown) made into the air filter chamber (208).
[00024] In order to measure the speed of the vehicle (100) the speed sensor
(300) is provided on the crankcase wall (212). The speed sensor (300) is mounted on a speed sensor bracket (203). The speed sensor bracket (203) is provided with a pair of mounting means which allows the speed sensor bracket (203) to mount on crankcase wall (212). The bracket is also provided with a clamp (202). The clamp (202) provided on the bracket, clamps the drain tube (209) in such a way that the drain tube (209) remains intact in a specific position and specific location. The upper part of the drain tube (209) is connected to the air filter chamber (208) which collects the extra fuel which may come inside the air filter chamber (208). The upper part of the drain tube (209) is affixed to the air filter chamber (208) using a drain tube hose clip (213) whereas the lower part of the drain tube (209) is held at a fixed place by the clamp (202). As per an embodiment, the clamp (202) is in the shape of hook and this shape grips the drain tube (209) by hugging with outer surface of the drain tube (209).
[00025] The speed sensor bracket (203) with the clamp (202) performs dual
function where the speed sensor bracket (203), mounted on the crankcase, allows the mounting of the speed sensor (300) and also providing a clamp (202) which can support and keep the position of the drain tube (209) fixed at one place and thereby preventing the drain tube (209) from hitting the surface of the crankcase. Generally, during driving conditions the body of the crankcase (204) gets heated up quickly

which may melt the drain tube (209) which is made up of polymer material. Also, a longer drain tube (209) needs additional support which is provided by the clamp (202) provided on the speed sensor bracket (203).
[00026] With the increase of the length of the drain tube (209) the drain tube
(209) may wobble in different direction and may get damaged quickly so by
providing the clamp (202) the lower part of the drain tube (209) remains at one
place .without wobbling and hitting any nearby component.
[00027] Fig. 3 illustrates a disposition of the speed sensor (300) on the speed
sensor bracket (300). In one embodiment the clamp (202) forms the part of the speed sensor bracket (203) as a single unit and in another embodiment the clamp (202) is fixedly attached to the speed sensor bracket (203) through welding or the clamp (202) is forming a single integrated part with a speed sensor bracket (203). The clamp (202) is positioned substantially perpendicular with respect to the speed sensor bracket (203). The clamp (202) holds the drain tube (not shown). The speed sensor (300) sends signal through a speed sensor cable (301) to a signal conditioning circuit (not shown). The speed sensor cable (301) starting from the speed sensor (300) and routed from the crankcase is extended below the air filter chamber (208). The speed sensor cable (301) is held in its place using hose clips (302). The hose clips (302) prevents the speed sensor cable (301) from coming in direct contact with the crankcase or the engine and thereby preventing melting of the speed sensor cable (301) due to high temperature.
[00028] Fig. 4 illustrates the mounting of the speed sensor (300) on the speed
sensor bracket (203) and the speed sensor bracket (203) is provided on the crankcase. The speed sensor bracket (203) is provided with pair of mounting holes (403,404) which allow the speed sensor bracket (203) to be mounted onto the crankcase. The speed sensor bracket (203) is mounted by using a pair of mounting means (401,402). The pair of mounting means (401,402) are inserted into the pair of the mounting holes (403,404) provided on the bracket which enables the speed sensor bracket (203) to get mounted onto the crankcase.
[00029] The speed sensor bracket (203) also holds a speed sensor (300)
between the pair of mounting holes (403,404) such that one part of the speed sensor

(300) protrudes in the upward direction outside the crankcase and other part goes
down inside the crankcase. The protruding part of the speed sensor is a head portion
(405) which remains outside of the crankcase whereas the tail portion (406) which
comprises a sensor in one embodiment a hall sensor is positioned in such a manner .
that the sensor is in close proximity to the gear assembly (411).
[00030] The gear assembly (411) is mounted on the crank shaft (408) and the
gear starts rotating when powered by at least one power source like an engine or a battery. The gear assembly (411) further comprises a gear with teeth arranged in circumferential fashion on the outer periphery of the gear. The teeth have plurality of land (410) and pits (409). When the vehicle (100) is in moving condition the gear ' . also rotates such that the plurality of lands (410) and pits (409), one by one, crosses the tail portion (406) of the speed sensor (300).
[00031] The speed sensor (300) has a digital counter circuit (407)
constructed with plurality of flip-flops which counts the number of lands (410) or pits (409) crossing the speed sensor (300) tail portion (406). This movement of the gear and the manner which the plurality of land crosses the tail portion generates a pulse waveform. The pulse wave is then sent to the signal conditioning circuit where the noise is filtered out using a filter of predetermined frequency range. After, the noise is eliminated from the pulse wave then.the output signal is amplified in order to be processed by the microcontroller. The microprocessor calculates the instantaneous value of the speed of the vehicle. The speed is calculated on the basis of the number of land and pits crossing the tail portion (406) of the speed sensor (300) in one rotation.
[00032] Fig.5 illustrates top perspective view of the crankcase. The speed
sensor cable (301) originates from the head portion (405) of the speed sensor (300) and the speed sensor cable (301) extends from the crankcase to the gear box (502). The speed sensor cable (301) is clipped at multiple locations in order to prevent the movement of the speed sensor cable (301) and to avoid any accidental contact with heated surface of the engine as well as preventing the speed sensor cable (301) from getting entangled with any other cable. The speed sensor cable (301) is clipped on the crankcase surface using hose clip (302a). Then connecting area (501) between

the crankcase and the gear box is provided with a hose clip (302b). The speed sensor
(300) .is then attached to the gearbox using hose clip (302c). The speed sensor cable
(301) sends the signal to the signal conditioning circuit and to enable this the speed sensor cable (301) is provided with a mating coupler (503) which can be coupled with another coupler in order to send the signal to the signal conditioning circuit. [00033] In order to keep the speed sensor cable (301) affixed to the crankcase and the gear box (502), a plurality of hose clips (302a, 302b, 302c). Hose clip (302a) affixes the first portion of the speed sensor cable (301) to the speed sensor bracket (203). The speed sensor cable (301) further extends towards the connecting area (501) where hose clip (302a) helps the intermediate portion of the speed sensor cable (301) in order to route along the connected area (501). Another hose clip (302c) fixes the end portion of the speed sensor cable (301) to the gear box (501) where the speed sensor cable (301) is terminated by a mating coupler (503). As per another embodiment of the present subject matter, the hose clip (302a) is removably or fixedly attached with a long arm portion (702) (refer fig.7) integrally configured with the speed sensor bracket (203)
[00034] Fig. 6 provides exploded view of the crankcase assembly with the
speed sensor bracket (203).
[00035] Fig. 7 illustrates the side perspective view of the speed sensor for
vehicle (100). The speed sensor bracket (203) comprises a short arm portion (701) and a long arm portion (702). Both the arm portion are provided with mounting holes (403,404). The speed sensor (300) comprises a head portion (405) and a tail portion (406). The head portion (405) of the speed sensor (300) remains outside of the crankcase and above the speed sensor bracket (203) facing towards the seat (not shown) of the vehicle (100). The tail portion (406) faces in down ward direction such that the tail portion (406) goes inside the crank case and remains in close proximity of the gear. The tail portion (406) of the speed sensor (300) is embedded through speed sensor bracket (203) in the extended portion (703). The air gap between the gear and the tail portion (406) of the sensor (300) should be less for accurate measurement of the speed of the vehicle. The gear which is provided with teeth on the outer periphery and with the rotation of the lands and pits of the teeth

also rotate. The speed sensor bracket (203) is provided with a substantially hook shaped clamp (202). As per another embodiment, the clamp can be substantially L shaped. The space between the clamp (202) and the speed sensor bracket (203) helps in holding the drain tube (209). The clamp (202) has an upper flange (202b) and a lower flange (202a). The upper flange (202b) and the lower flange (202a), together, form an angle such that the upper flange (202b) is parallel with the surface of the speed sensor bracket (203) and the lower flange (202a) is substantially perpendicular to the speed sensor bracket (203). The upper flange (202b) faces in a direction away from the vehicle (100). The upper flange (202b) along with the lower flange (202a) forms a channel with the speed sensor bracket (203). This channel formed by the clamp (202) allows the drain tube (209) to fit in it firmly. The clamp (202) along with the speed sensor bracket (203) prevent any effect of the vehicular vibration which may affect the drain tube (209) and also the clamp (202) keeps the drain tube (209) held at one particular position and location so that the configuration improves the serviceability. The speed sensor cable (301) is connected to the head portion (405) of the speed sensor (300) and extends towards the gear box (502) through a connecting area (501) which connects the crankcase and the gear box (502). In order to keep the speed sensor cable (301) affixed to the crankcase and the gear box (502), a plurality of hose clip (302a, 302b, 302c). Hose clip (302a) affixes the first portion of the speed sensor cable (301) to the speed sensor bracket (203). The speed sensor cable (301) further extends towards the connecting area (501) where hose clip (302a) helps the intermediate portion of the speed sensor cable (301) in order to route along the connected area (501). Hose clip (302a) is disposed on long arm portion (702). Another hose clip (302c) fixes the end portion of the speed sensor cable (301) to the gear box (501) where the speed sensor cable (301) gets terminated by a mating coupler (503).
[00036] Arrows provided in the top right comer of each figure depicts
direction with respect to the two-wheeled vehicle (100), wherein an arrow F denotes front direction, an arrow R indicated Rear direction, T denotes top and D denotes

down direction as and where applicable. Improvements and modifications may be incorporated herein without deviating from the scope of the invention
[00037] Many modifications and variations of the present subject matter are
possible in the light of above disclosure. Therefore, within the scope of claims of the present subject matter, the present disclosure may be practiced other than as specifically described.
Nomenclature of elements reference
100-vehicle 145-floorboard
105-frame member 150-seat assembly
i 105A-headtube . 155A-head light
105B-main frame 25 155B-tail light
110-front wheel 200-engine assembly
115-IC engine 201-rear mud guard
120-electric motor 202-clamp
< 125-wheels 202a-lower flange
130-handle bar assembly 30 202b-upper flange
135-structural member 203-speed sensor bracket
140A-front panel 204-crank case
140B-Ieg shield 205-crankcase brake mounting means
i 140C-under-seat cover 206-drive shaft
140D-right-side panel 35 207-vent hose

■ 208-air filter chamber 302c-hose clip
209-drain tube 302-hose clips
210-hose clip 401-mounting means
211-crankcase vent tube 402-mounting means
i 212-crankcase wall 15 403-mounting holes
213-drain tube hose clip 404-mounting holes
300-speed sensor 405-head portion
301-speed sensor cable 406-tail portion
302a-hose clip 407-digital counter circuit
i 302b-hose clip 20 408-crank shaft
409-pit 25 502-gearbox
410-land 503- mating coupler
411-gear assembly 701,702- Arm portions
cni .. 703-Extended portion
501-connecting area r

We claim: •
1. An engine assembly (200) of a vehicle comprising:
a crankcase assembly provided with a crank case (204), a pair of mounting holes (403,404) on said crank case (204) to mount a speed sensor bracket (203); a pair of mounting means (401,402); said pair of mounting means (401,402) to secure the speed sensor bracket (203) on said crankcase (204); a clamp (202) attached to said speed sensor bracket (203), said clamp (202) comprises one or more flanges (202a, 202b); and
said one or more flanges (202a, 202b) forms a channel with said speed sensor bracket (203).
2. The engine assembly (200) as claimed in claim 1, wherein said one or more -flange is an upper flange (202b) and a lower flange (202a).'
3. The engine assembly (200) as claimed in claim 1 to 2, wherein said upper flange (202b) of said clamp (202) is substantially parallel with said speed sensor bracket (203).
4. The engine assembly (200) as claimed in claim 1 to 2, wherein said lower flange (202a) of said clamp (202) is substantially perpendicular to said speed sensor bracket (203).
5. The engine assembly (200) as claimed in claim 1, said clamp (202) is fixedly attached to said speed sensor bracket (203) by welding.
6. The engine assembly (200) as claimed in claim 1, said channel formed between said clamp (202) and said speed sensor bracket (203) to accommodate a drain tube (209).
7. A speed sensor bracket (203) comprising:
one or more arm portions (701,702), said one or more arm portion comprises one or more mounting holes (403,404) a speed sensor (300) embedded in said speed sensor bracket (203) in a extended portion (703); a clamp (202) fixedly attached with said sensor bracket (203), said clamp (202) comprises one or more flange (202a, 202b); and said one or more flanges (202a, 202b) forms a channel with said speed sensor bracket (203).

8. The speed sensor bracket (203) as claimed in claim 8, wherein said one or more flange is an upper flange (202b) and a lower flange (202a).
9. The speed sensor bracket (203) as. claimed in claim 8, wherein said upper flange (202b) of said clamp (202) is substantially parallel with said speed sensor bracket (203).
10. The speed sensor bracket (203) as claimed in claim 8, wherein said clamp (202) is fixedly attached to said speed sensor bracket (203) by welding.
11. The speed sensor bracket (203) as claimed in claim 8, wherein said clamp (202) is configured with said speed sensor bracket (203) to be integral with said speed sensor bracket (203).
12. The speed sensor bracket (203) as claimed in claim 8, wherein said one or more arm portions are a short arm portion (701) and a long arm portion (702).
13. The speed sensor bracket (203) as claimed in claim 8 or claim 12, wherein a hose clip (302a) is fixedly or removably attached with said long arm portion (702).
14. A cable routing structure for a vehicle (100); said vehicle (lOO)comprising: a crankcase assembly provided with a crank case (204), a pair of mounting holes (403,404) on said crank case (204) to mount a speed sensor bracket (203); a pair of mounting means (401,402); said pair of mounting means (401,402) to secure the speed sensor bracket (203) on said crankcase (204); a speed sensor cable (301) routed along said crank case (204) by means of one or more hose clips (302a, 302b and 302c).
15. The cable routing structure for a vehicle (100) as claimed in claim 14, wherein said sensor cable (301) originates from a head portion (405) of a • speed sensor (300).
16. The cable routing structure for a vehicle (100) as claimed in claim 14,
.wherein said speed sensor cable (301) extends from said crankcase (204) to
a gear box (502).
17. The cable routing structure for a vehicle (100) as claimed in claim 14,
wherein said speed sensor cable (301) routed along a connecting area (501).

18. The cable routing structure for a vehicle (100) as claimed in claim 14, wherein said speed sensor cable (301) terminates with a mating coupler (503).
19.-The cable routing structure for a vehicle (100) as claimed in claim 14, j
wherein said vehicle is a two-wheeled vehicle and a three-wheeled vehicle.