Road crown compensation

[calgator73]

I was searching across something unrelated and came across this article:

 

http://www.acdelcotechconnect.com/pdf/TechConnect_SepOct_2013.pdf

 

Page 3 middle column under the description of the Electric Power Steering there's this nugget:

 

In addition to smooth road shake, road crown is compensated for by the steering wheel angle sensor signal, which calculates the intended driving direction.

 

 

I drive on a 4-lane divided highway that has a crown almost precisely located on the dashed center line. I let go of the wheel and the truck will drift left or right depending on my lane choice (away from the crown) and I have to dial in correction. No biggie from the perspective of normal...but.

 

Anyone else experience this?

[POS VETT]

Yeah, that's normal. I'd rather have alignment dialed in for "straightness" than compensated for road crown.

[calgator73]

Agreed...if my interpretation is correct you steer straight, the eps provides assistance without you having to dial in correction yourself. Wonder what the limits are.

[ShotgunZ71]

Same here. My truck drifts with the slightest of angle toward the low side. Very little effort, if measurable, has to be added to keep it where I want it.

[fondupot]

This is a characteristic of the EPAS. I never noticed this on a Hydraulic assist steering before.

[calgator73]

It is interesting that before you get an alignment they recommend a steering angle sensor alignment. Makes sense when you think about it.