Acura TL, RL & ZDX Includes Legend, Vigor and 2001 - 2003 Acura CL

So tell me about the CRV AWD system

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Old Jan 5, 2004 | 07:42 PM
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satan_srv's Avatar
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Default So tell me about the CRV AWD system

Does the CRV AWD system have an external transfer case that handles all the rerouting of the power?

If so where is it located? Is it mounted on the back of the block? Does it intercept the intermediate shaft?

Also this is not a 'full-time' AWD is it? It just kicks in when it slips right?

Thanks in advance
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Old Jan 6, 2004 | 10:13 AM
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Default Re: So tell me about the CRV AWD system (satan_srv)

I don't know the answers to your question, but the people at http://www.hondasuv.com might. Good luck.
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Old Jan 6, 2004 | 03:12 PM
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Default Re: So tell me about the CRV AWD system (satan_srv)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Does the CRV AWD system have an external transfer case that handles all the rerouting of the power?

If so where is it located? Is it mounted on the back of the block? Does it intercept the intermediate shaft?

Also this is not a 'full-time' AWD is it? It just kicks in when it slips right?

Thanks in advance</TD></TR></TABLE>
yea the realtime 4wd activates due to a differential that transfers tq to the rear when the front slips. in my opinino, its pretty handy in rain/snow/ice.
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Old Jan 9, 2004 | 02:24 AM
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Default Re: So tell me about the CRV AWD system (azndng)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by azndng &raquo;</TD></TR><TR><TD CLASS="quote">
yea the realtime 4wd activates due to a differential that transfers tq to the rear when the front slips. in my opinino, its pretty handy in rain/snow/ice.</TD></TR></TABLE>

it's AWD, not 4WD, get it right, it's not the samething
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Old Jan 9, 2004 | 07:05 AM
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Default Re: So tell me about the CRV AWD system (iam7head)

Honda calls it "Realtime 4WD" not Realtime AWD, even thought that may be what it is.
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Old Jan 10, 2004 | 10:54 AM
  #6  
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Default Re: So tell me about the CRV AWD system (azndng)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by azndng &raquo;</TD></TR><TR><TD CLASS="quote">
yea the realtime 4wd activates due to a differential that transfers tq to the rear when the front slips. in my opinino, its pretty handy in rain/snow/ice.</TD></TR></TABLE>
oh it is quite nice (though i have an element...same system as the CRV).



<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Real Time™ 4WD

The Real Time™ 4WD system on the CR-V is designed to overcome the traditional drawbacks of a full-time four-wheel-drive system such as lower fuel economy, higher noise and vibration levels, higher weight and difficulty in adapting the system to ABS. The CR-V’s Real Time™ 4WD operates automatically and only when needed. It requires absolutely no intervention on behalf of the driver for it to be engaged or disengaged.

The CR-V’s Real Time™ 4WD system sends power only to the rear wheels when there is insufficient traction for the front-wheel-drive system. The system consists of the conventional front-wheel-drive system, a compact transfer case that distributes drive to a propeller shaft running the length of the vehicle, a dual-pump system, the rear differential, and left and right rear-wheel driveshafts.

The heart of the system is the dual-pump unit. It consists of two hydraulic pumps, one driven by the front wheels via the propeller shaft and one driven by the rear wheels via the rear differential. A hydraulically actuated, multi-plate clutch, similar to the clutches used in Honda automatic transmissions, connects the propeller shaft to the rear differential.

When the CR-V is operating with the front and rear wheels turning at the same speed, for example on dry pavement, the front and rear hydraulic pumps operate at the same speed. Hydraulic fluid circulates between the two pumps; however, no pressure is generated. In effect, the fluid fed by the front pump is absorbed by the rear pump.

If the front wheels begin to turn faster than the rear wheels, as would be the case if they were spinning on snow or ice, the two hydraulic pumps would turn at a different rate and hydraulic pressure proportional to the difference in their speeds of rotation would be generated. The resulting hydraulic pressure opens a valve body and feeds pressure to the multi-plate clutch, which engages the front propeller shaft to the rear differential. The rear differential feeds the drive torque to the right and left rear wheels.

System operation is completely automatic; no electronics or driver action is involved. The greater the degree of front-wheel slippage, the greater the amount of torque fed to the rear wheels. Real Time™ 4WD is also practically maintenance- free, requiring only a scheduled fluid change at 96,000 km or 48 months under severe conditions. Another big advantage of the CR-V’s dual-pump Real Time™ 4WD system is that, unlike conventional 4WD systems, Real Time™ 4WD automatically disengages under braking, thereby allowing the ABS system to engage.</TD></TR></TABLE>
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Old Jan 14, 2004 | 09:22 PM
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Default Re: So tell me about the CRV AWD system (iam7head)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iam7head &raquo;</TD></TR><TR><TD CLASS="quote">

it's AWD, not 4WD, get it right, it's not the samething</TD></TR></TABLE>

refer to pic
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Old Jan 15, 2004 | 01:52 PM
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Carless Joe's Avatar
 
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Default Re: So tell me about the CRV AWD system (satan_srv)

So has anyone figured out how to reverse the system and have it route power to the rears except when they spin?
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Old Jan 17, 2004 | 06:05 PM
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From: Houghton, MI, U.S.A.
Default

I know in the pilot that it is possible to switch the drive system so it is always in 4 wheel drive but in the crv's and element's system it is activated by the front tires spinning to activate the rear wheels.
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Old Jan 19, 2004 | 12:10 AM
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Default Re: (bengro)

thanks for the pic, that really helped!
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