Dual pivot steering geometry
Dual-pivot steering geometry (also known as virtual pivot) is a geometric arrangement of linkages in the steering of a car designed to reduce or eliminate scrub radius by moving the pivot point of the king pin outboard, in order to improve steering precision and straight line stability.[1][2]
It is typically used with a MacPherson strut, but can also be applied to a double wishbone suspension.[3] In either case, the difference is that the single bottom wishbone is replaced by a pair of suspension links forming a trapezoidal four-bar linkage. This allows the kingpin to pivot about a pivot point nearer the center of the wheel's contact patch instead of the traditional pivot point at the ball joint of the bottom wishbone.[2]
Examples
[edit]See also
[edit]- Scrub radius
- MacPherson strut
- Double wishbone suspension
- King pin
- Steering
- Four-bar linkage
- Ackermann steering geometry
- Control arm
- Radius rod
References
[edit]- ^ a b c 2009 Hyundai Genesis Coupe: Suspension Walkaround by Dan Edmunds, 2009, Edmunds.com. Accessed October 2014.
- ^ a b Edmunds, Dan (May 13, 2020). "2020 Acura NSX Suspension Deep Dive". Autoblog.
- ^ a b 2009 BMW 750i: Suspension Walkaround by Dan Edmunds, 2009, Edmunds.com. Accessed October 2014.
- ^ Edmunds, Dan (May 13, 2020). "2020 Acura NSX Suspension Deep Dive". Autoblog.
- ^ "The secrets of Alfa Romeo driving dynamics" (PDF). Stellantis. Alfa Romeo Driving Academy. December 12, 2018. pp. 3–5.
- ^ a b c Mees, Huibert (August 3, 2022). "I'm A Former Tesla Suspension Engineer And I Need To Tell You Why The 'Double Ball Joint' Suspension Is So Incredible". The Autopian.
- ^ "Falcon & G Series Driving Dynamics". Ford Australia. Archived from the original on 2012-03-20.
- ^ Pettendy, Marton (August 19, 2003). "A new front suspension is the start point as Ford starts revealing Territory". GoAuto. Archived from the original on 2008-08-21.
- ^ Dan Edmunds (2009). Pontiac G8 GT dual-pivot front suspension demonstrated.
- ^ 2012 Tesla Model S Signature Performance Suspension Walkaround by Dan Edmunds, 2012, Edmunds.com. Accessed October 2014.