Jeeps 4x4 systems
Jeeps 4x4 systems
Jeep is credited for designing some of the most effective all-terrain vehicles on the road today. For almost eight decades now, Jeep vehicles have been aiding adrenalin junkies with exploring uncharted territories. Jeep SUVs are meant to go into areas where other SUVs can only dream of venturing into. So it's no wonder that they have achieved high status. One of the reasons behind the success of Jeep vehicles is the highly-responsive Jeep 4X4 systems. The legendary tech is put under rigorous testing in extreme conditions and goes through a number of quality checks. We, in this post, take a look at some of the most effective and capable Jeep 4X4 systems.
First introduced in 1980, the Command-Trac comes equipped with a chain-driven, aluminum, "shift-on-the-fly" transfer case. The shift-on-the-fly is specially designed to avoid common handling difficulties. Some applications of the Command-Track are found in the Jeep Wrangler (1987-present), Jeep Cherokee (1984-2001), and Jeep Grand Cherokee (1993-1995).
Rock-Trac is similar to Command-Trec with the only difference being that it uses the new venture gear NV241OR and locking differentials to help rotate the wheels of the car in unison, irrespective of the traction available. In 2007, Jeep replaced air-actuation with electric actuation. Some applications of the Rock-Trac include Jeep Wrangler Unlimited Rubicon (200-present), and Jeep Wrangler Rubicon (2003-present).
Four variants of Active Drive include Active Drive I, Active Drive II, Active Drive Low, and Active Drive Lock. Active Drive I does not require any driver inputs. The 4X4 system continuously monitors the speed of the front and rear axles. If it senses that the front axle is moving at a higher speed than the rear axle, it sends power through the power transfer unit to the rear axle. Active Drive II is a notch above Active Drive I. It includes all the features of the system, plus a low gear range. The system provides a crawl ratio of 56:1 for four-cylinder vehicles and 47.8:1 for six-cylinder Jeep Cherokees. Active Drive Low has a crawl ratio of 20:1, and Active Drive Lock includes all the features of Active Drive II along with a locking rear differential.