Anti-lock brake system for all-terrain vehicle
An all-terrain vehicle is disclosed having a braking system with an anti-lock braking control module and a first brake master cylinder hydraulically coupled to the anti-lock braking control module. A first brake actuator is coupled to the first brake master cylinder and a brake caliper is coupled to at least some of the ground engaging members. The first brake master cylinder upon actuation provides anti-lock braking to either the first or second ground engaging members. A second brake master cylinder is hydraulically coupled to the anti-lock braking control module. A second brake actuator is coupled to the second brake master cylinder and a brake caliper is coupled to at least some of the ground engaging members. The second brake master cylinder upon actuation provides anti-lock braking to either the first or second ground engaging members. The vehicle also has a speed monitor with a gear ring positioned on an exterior surface of a stub shaft and a speed pickup positioned adjacent to the gear ring.
1. An all-terrain vehicle, comprising:
a frame;
at least four ground engaging members supporting the frame;
a powertrain supported by the frame and including at least one final drive drivingly coupled to at least some of the ground engaging members; and
a braking system comprising:
an anti-lock braking control module;
a first brake master cylinder hydraulically coupled to the anti-lock braking control module;
a second brake master cylinder hydraulically coupled to the anti-lock braking control module;
a first brake actuator coupled to the first brake master cylinder;
a second brake actuator coupled to the second brake master cylinder; and
a brake caliper coupled to each of the at least four ground engaging members,
wherein the first brake master cylinder provides independent four-channel anti-lock braking to the at least four ground engaging members upon actuation by the first brake actuator, and
wherein the second brake master cylinder provides independent four-channel anti-lock braking to the at least four ground engaging members upon actuation by the second brake actuator.
2. The all-terrain vehicle of claim 1 , wherein the ground engaging members comprise at least a front pair of ground engaging members and a rear pair of ground engaging members,
wherein the first brake master cylinder provides anti-lock braking to both the front and rear pairs of ground engaging members upon actuation by the first brake actuator, and
wherein the second brake master cylinder provides anti-lock braking to both the front and rear pairs of ground engaging members upon actuation by the second brake actuator.
3. The all-terrain vehicle of claim 2 , wherein the first brake actuator for the first brake master cylinder is a hand controlled actuator.
4. The all-terrain vehicle of claim 3 , wherein the second brake actuator for the second brake master cylinder is a foot controlled actuator.
5. The all-terrain vehicle of claim 1 , wherein the braking system further comprises:
a first diverter valve hydraulically coupled to the anti-lock braking control module,
a second diverter valve hydraulically coupled to the anti-lock braking control module,
a first splitter hydraulically coupled intermediate the first brake master cylinder and the first and second diverter valves; and
a second splitter hydraulically coupled intermediate the second brake master cylinder and the first and second diverter valves.
6. The all-terrain vehicle of claim 1 , wherein the braking system further comprises:
a first diverter valve hydraulically coupled intermediate the anti-lock braking control module and the first and second brake master cylinders; and
a second diverter valve hydraulically coupled intermediate the anti-lock braking control module and the first and second brake master cylinders.
7. The all-terrain vehicle of claim 1 , wherein the at least one final drive includes a first final drive drivingly coupled to at least one front ground engaging member, and a second final drive drivingly coupled to at least one rear ground engaging member.
8. The all-terrain vehicle of claim 1 , wherein the braking system further comprises an external pressure transducer hydraulically coupled to at least one of the first and second brake master cylinders and to the anti-lock braking control module, the external pressure and transducer external to the anti-lock braking control module.
9. The all-terrain vehicle of claim 8 , wherein the braking system further comprises an internal pressure transducer hydraulically coupled to the other of the first and second brake master cylinders and integrated into the anti-lock braking control module.
10. The all-terrain vehicle of claim 1 , further comprising a speed monitor for at least some of the ground engaging members.
11. The all-terrain vehicle of claim 10 , further comprising stub shafts extending from the at least one final drive to the ground engaging members.
12. The all-terrain vehicle of claim 11 , wherein the speed monitor comprises a gear ring positioned on an exterior surface of each of the stub shafts and a speed pickup positioned adjacent to the gear ring.
13. An all-terrain vehicle, comprising:
a frame;
ground engaging members supporting the frame;
a powertrain supported by the frame and including at least one final drive drivingly coupled to at least some of the ground engaging members; and
a braking system comprising:
an anti-lock braking control module including an internal pressure transducer;
a rear brake master cylinder hydraulically coupled to the anti-lock braking control module;
a front brake actuator coupled to the front brake master cylinder;
a rear brake actuator coupled to the rear brake master cylinder;
a brake caliper coupled to the ground engaging members; and
an external pressure transducer positioned along a hydraulic line extending from the rear brake master cylinder to the anti-lock braking control module,
wherein the internal pressure transducer is hydraulically couple to both the front and rear brake master cylinders and to the anti-lock braking control module, and the external pressure transducer is hydraulically coupled to only the rear brake master cylinder and to the anti-lock braking control module.
14. The all-terrain vehicle of claim 13 , wherein the external pressure transducer hydraulically coupled to the rear brake master cylinder.
15. The all-terrain vehicle of claim 14 , wherein the rear brake actuator is a foot controlled actuator.
16. The all-terrain vehicle of claim 15 , wherein the front brake actuator is a hand controlled actuator.
17. The all-terrain vehicle of claim 13 , wherein the external pressure transducer is hydraulically coupled to the front brake master cylinder.
18. The all-terrain vehicle of claim 13 , wherein the front brake master cylinder provides anti-lock braking to the ground engaging members upon actuation by the front brake actuator, and the rear brake master cylinder provides anti-lock braking to the ground engaging members upon actuation by the rear brake actuator.
19. The all-terrain vehicle of claim 18 , wherein the ground engaging members comprise at least a front pair of ground engaging members and a rear pair of ground engaging members.