Agricultural Engineering > GATE 2026 > Steering Systems
A stationary Ackerman-steer tractor on dry, clean concrete surface carries 12 kN vertical load on each front steered wheel of 0.28 m nominal tyre width (b). Assume uniform pressure distribution on the circular tyre-print area having diameter b. Effective friction coefficient between tyre and surface is 0.30.
The steering is individually power-assisted by a single-rod hydraulic cylinder, acting through a pitman arm resulting in 60 mm effective moment arm. The hydraulic relief valve is set to 8 MPa, and the cylinder bore is 32 mm (ignore rod area). Neglect other losses. The maximum kingpin offset (in mm), which does not cause to exceed the maximum allowable kingpin torque is ________. (Rounded off to the nearest integer)
(Take ฯ = 3.14)
The steering is individually power-assisted by a single-rod hydraulic cylinder, acting through a pitman arm resulting in 60 mm effective moment arm. The hydraulic relief valve is set to 8 MPa, and the cylinder bore is 32 mm (ignore rod area). Neglect other losses. The maximum kingpin offset (in mm), which does not cause to exceed the maximum allowable kingpin torque is ________. (Rounded off to the nearest integer)
(Take ฯ = 3.14)
Correct : 58
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