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Stop and Start
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CY
 


Member Since: 16 Aug 2005
Location: Warwickshire
Posts: 4506

Scotland 2008 Discovery 3 TDV6 HSE Auto Tangiers OrangeDiscovery 3
Stop and Start

Am I right in thinking that the D4 does not have Stop and Start technology in it?

If so, why not? Confused And is it likely to get it in the future?
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Post #5045486th Aug 2009 7:51 pm
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SJR
 


Member Since: 09 Aug 2006
Location: East Manchester
Posts: 4030

England 2006 Discovery 3 TDV6 SE Auto Arctic FrostDiscovery 3

What no brakes or accelerater Shocked





Wink Thumbs Up
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Post #5045516th Aug 2009 7:53 pm
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JF Lux
 


Member Since: 08 Sep 2007
Location: A little country in Europe
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Luxembourg 2008 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

I think the stop/start can only work on a manual at the moment.

IIRC, LR are trying to get stop/start for the auto.
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Post #5045716th Aug 2009 8:20 pm
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The Large One
 


Member Since: 20 Apr 2007
Location: Down the polytunnel
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England 2009 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

iv'e got stop/start on my FL2

i have it switched off, pain in the a r s e
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Post #5045996th Aug 2009 9:06 pm
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npinks
 


Member Since: 30 Jan 2008
Location: Leeds
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United Kingdom 

I had it in a loan car I agree it was a PITA

if you set off too quick the engine wouldn't switch on
  
Post #5046006th Aug 2009 9:10 pm
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DG
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Member Since: 12 Dec 2005
Location: The Gaff
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Wales 

The concept of stop start is great until you realise that some components are having to operate thousands of times more than if they were just used in normal operations ...ie. the starter motor perhaps Whistle
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Post #5046036th Aug 2009 9:13 pm
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npinks
 


Member Since: 30 Jan 2008
Location: Leeds
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I think it was beefed up abit to taken into account the extra abuse
  
Post #5046046th Aug 2009 9:15 pm
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CY
 


Member Since: 16 Aug 2005
Location: Warwickshire
Posts: 4506

Scotland 2008 Discovery 3 TDV6 HSE Auto Tangiers OrangeDiscovery 3

We have a BMW s/s in the family now and have only put £10 of diesel in (on top of the limited fuel provided upon purchase) - covered 600 miles so far Shocked My mate's Mini Cooper D has S/S and we got over 75mpg on a motorway jaunt darn sarf last week.

DG, I believe the components put under extra pressure have been improved?

Land Rover wrote:
The more frequent stop and start activity means that demands on the starter motor are forecast to increase up to three-fold during the lifetime of the Freelander 2 TD4_e. So, to accommodate the durability demands on the vehicle's 2kW starter motor, a number of changes have been made.

The grease seals have been enhanced significantly and new hard-wearing copper-tungsten contact material has been sourced and specified across the TD4_e range to enhance wear resistance within the starter solenoid.


I'm surprised they're releasing the new 10MY range without it TBH.
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Last edited by CY on 6th Aug 2009 9:22 pm. Edited 1 time in total 
Post #5046086th Aug 2009 9:21 pm
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Martin
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Member Since: 06 Nov 2004
Location: Hook Norton
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United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

The starter motor is beefed up, as is the battery, etc.
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Post #5046096th Aug 2009 9:21 pm
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DG
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Member Since: 12 Dec 2005
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Appreciate that might be the case ......but if you think of a single journey across town of say 10 miles ...how many times would you stop .. 20, 30, 40, 50 times ? Thats just on one journey ....maybe I should have said 'hundreds of thousands of times' Whistle
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Post #5046126th Aug 2009 9:26 pm
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Ken
  


Member Since: 20 Feb 2006
Location: Here
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Stop Start is a PITA on BMW's most turn it off (your think its a pain the agree on the Nav Rolling with laughter ) however there is a strict criteria for it to work any how
  
Post #5046166th Aug 2009 9:30 pm
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PaulP
 


Member Since: 04 May 2007
Location: Barcelona
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Spain 2006 Discovery 3 TDV6 SE Auto Buckingham BlueDiscovery 3

CY wrote:
My mate's Mini Cooper D has S/S and we got over 75mpg on a motorway jaunt darn sarf last week.

But has the Stop/Start got anything to do with getting 75mpg? If you were on the motorway I would hope that the engine would never switch off to save fuel Whistle

CY wrote:
I'm surprised they're releasing the new 10MY range without it TBH.

Nearly all Discovery 4s will be sold with automatic transmission - only the 'old' 2.7s will come with the manual option.

Stop/Start systems take advantage of the delay in the following whilst the system starts the engine:

1. depressing the clutch and/or disengaging the handbrake
2. selecting 1st gear
3. applying revs
4. easing out the clutch

During this time, the car will engage the starter motor and the engine will turn over and fire up....by the time you reach number 4, the engine is working and ready.

In an automatic, the normal thing is to take the foot off the brake and immediately press the accelerator and expect the car to move.

I believe that this is the reason why Stop/Start is not available on auto vehicles at the moment - it just wouldn't be smooth enough to be useable.....but it's only a matter of time until they get it working Thumbs Up
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Post #5046286th Aug 2009 9:43 pm
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Martin
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Member Since: 06 Nov 2004
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United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

DG wrote:
Appreciate that might be the case ......but if you think of a single journey across town of say 10 miles ...how many times would you stop .. 20, 30, 40, 50 times ? Thats just on one journey ....maybe I should have said 'hundreds of thousands of times' Whistle


They are significantly improved to take into account the duty cycle they experience Smile
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Post #5046326th Aug 2009 9:48 pm
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DG
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Member Since: 12 Dec 2005
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Wales 

So given that why cant they make these components 'significantly beefed up' for the rest of us Rolling Eyes ...does make you wonder if components have a built in life expectancy Whistle
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Post #5046366th Aug 2009 9:57 pm
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PaulP
 


Member Since: 04 May 2007
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Spain 2006 Discovery 3 TDV6 SE Auto Buckingham BlueDiscovery 3

'Cos then we'd have nothing to whinge about Wink

Parts don't have built-in life expectancies, but costs that must be acheived through the design/specification of them......

Saying that though - ISTR that the new S/S FL2s costs the same as the old ones did - so how do they recover the extra build-cost??
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Post #5046386th Aug 2009 10:01 pm
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