Table of Contents
What is an epicyclic differential?
Modern day, epicyclic differential produces torque unequally between the front and rear axles – two thirds to the rear and one third to the front – yet it still drives each axle at the same speed.
What does epicyclic gear do?
A planetary or epicyclic gear train is one type of gear train used to transmit motion. Epicyclic gear trains consist of two or more gears mounted so that the center of one gear revolves around the center of the other.
What is difference between epicyclic and planetary?
Epicyclic gearing systems also incorporate the use of an outer ring gear or annulus, which meshes with the planet gears. Compared to simple planetary gears, compound planetary gears have the advantages of larger reduction ratio, higher torque-to-weight ratio, and more flexible configurations.
What is the purpose of a planetary gear?
Generally, planetary gears are used as speed reducers. They are used to slow down motors and increase the torque. Torque is the working power of the machine.
What will be the degree of freedom of epicyclic gear train?
Generally all simple gear train have 1 Degree of freedom but Epicyclic have 2 DOF since you need to give two inputs for getting an output.
What is an epicyclic gear central differential?
Epicyclic gear central differential ( Fig. 7.38) A popular four wheel drive arrangement for a front longitudinally mounted engine has a transfer box behind its five speed gearbox. This incorporates a viscous coupling and an epicyclic gear train to split the drive torque, 34\% to the front and 66\% to the rear ( Fig. 7.38 ).
What is an epicyclic differential on a Prius?
An epicyclic differential is at the core of the Toyota Prius car drive train, where it interconnects the motor, engine generators, and the drive wheels (which have the second differential for part torque obviously). It has the benefit of being moderately minimized along the length of its pivot (that is, the sun outfit shaft).
What do the red marks on an epicyclic gear mean?
The red marks show the relative displacement of the sun gear and carrier, when the carrier is rotated 45° clockwise and the ring gear is held fixed. An epicyclic gear train (also known as planetary gear) consists of two gears mounted so that the centre of one gear revolves around the centre of the other.
What are the uses of epicyclic gear trains?
The epicyclic gear trains are useful for transmitting high velocity ratios with gears of moderate size in a comparatively lesser space. They are used as differential gears in the speed frames, for driving bobbins and in the Roper positive let off in looms.