> From:
jcmassey@...
> Subject: Re: [EVDL] (Off Topic): Diesel compression, (on topic) EV brakes
>
> G'day Peter, All
>
> At 05:04 AM 13/05/08 -0600, Peter VanDerWal wrote:
> >Diesel engines have lots of Compression but this does NOT mean they have
> >lots of compression
> >braking.
> ><snip> Diesel do NOT have a throttle flap to close off the
> >air intake.
>
>> Well, I don't know what diesels you've been driving but lets see : two
>> Isuzu sedans, Toyotal Landcruiser, a little Ford hatch, two Toyota trucks,
>> all been driven and maintained some by me over the last 20-odd years, ALL
>> with throttle bodies that produce great vacuum when closed (and almost none
>> when open, hence the alternator-mounted vacuum pumps).
>
Umm, sorry but, diesels have no throttle bodies to close and do NOT produce vacuum, they are allowed all the air they can get at all times and vary only the fuel in order to vary power, that having been said my diesel (jetta) will put you through the windshield under compression braking, but will not hold itself in place when parked via compression, and I have to say no conversion should be relying totally on the vehicle service brakes they are prone to total failure without warning, and without some form of resistance braking at least for emergencies I belive you are asking for trouble
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