BibTeX:

@article{IJIRSTV3I11101,
     title={Design and Fabrication of Self-Locking Wheel Mechanism for Manual Transmission 4 Wheeled Automobiles Subjected to Positive Gradients},
     author={Benssin K. B, Blesson Abraham, Cyriac James, Jerrin Mathew and Visant P. V},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={3},
     number={11},
     pages={161--165},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV3I11101.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

In a manual gear driven four wheeled automobile which climbing a positive gradient, it is difficult for the driver to throttle the vehicle after fully applying the brakes. This special situation involves the expertise of the driver as the full application is dependent on the reflex action of the driver. Many people may not possess this skill. To overcome this problem, a Self-Locking Wheel Mechanism is attached to the idle shaft to the axle. Ratchet and pawl is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. If the vehicle approaches a positive gradient, the gyro sensor send signal to the relay to energize the solenoid which engages the ratchet and pawl mechanism. The driver only needs to throttle the vehicle instead of adjusting clutch, handbrake and throttle simultaneously. The mechanism is automatic, hence when the system detects positive gradients, anti-roll back system is engaged and on reaching level roads, it automatically goes to off position. This mechanism relieves the driver from this hectic task and making his role simpler.

Manual transmission, Self-locking wheel mechanism, Ratchet and pawl, Arduino Uno, Gyro sensor, Positive gradient