Planning Mercedes Sprinter y.2000+ conversion

6109 Views 8 Replies 3 Participants Last post by Sprinter, Apr 26, 2012

Sprinter

Discussion Starter · Apr 23, 2012 (Edited)

Hello, everyone!

Donor Vehicles: Mercedes Sprinter Medium & Long Based Vehicles carrying 17 people - I guess total medium weight about 3500kg-4000kg(have to check). Relief: Hills, lots of them

high% upward angle.

-Skill level with auto mechanics and fabrication:
-Little (Economist by profession)

-What level of performance you are hoping to get:
-Acceleration-base model or better;
-1)Urban Model: 70-75km/h, 20-25km range(which take about 40-45minutes due to traffic) with 40-60 minutes brake in a 8 hour working environment.
-2)Interurban Model:95-100km/h; 2 trips - 100km range with 3-5 hours brake time between them

-How much money you are willing to put into your project:
-As much as it is needed.
if possible to get separate components cost like batteries, controller, charger and so on.

-What parts you've already considered, if any:
-None

I would like to consider well separated answers between these 2 models: Urban & Interurban.

Main Question: IS it possible and at what cost?

P.S. Need only cost of parts (preferably some EU/Russian/Chinese Manufacturers)

The standard gasoline engine models have a max. 243lbs*ft torque (330 N*m)
max power ranges: 65kw to 105kw

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Sprinter

Discussion Starter · #3 · Apr 24, 2012

Why 2 different models/designs?

Do you need 2 separate vans for different purposes?

-Yes, 2 different vans.

That weight looks on the heavy side. Maybe 3500kg gross laiden weight. Probably closer to 1500kg empty.

- GLW of 3500kg in the Interurban model will always be reached. It is a passenger van, so I want to build the vans with "reserve". It should be 100% reliable, service disruptions won't be tolerated, as I will be the first who inserts EV in the public transportation. I can do calculations, so if you could help me with the formula's (last time I did physics was in high school).

Have you got a set budget or a bottomless pit of cash ready to throw at this!?

-Well, I thought of hiring some polytechnic professors, to design the controller, dc-dc converter, charger... in such a case I'll do some cost cutting to the non-battery related components, motor not Included. Overall 20k euro's budget per van.

I'm going to take a stab in the dark and say 400-450wh/ mile.

-Same idea here, does regen help a lot (AC system)? The roads are 50/50% hills.

One last question, seen the budget, what are the most reliable battery distributors or manufacturers?

P.S. Thanks for help Mike!

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Sprinter

Discussion Starter · #5 · Apr 24, 2012

Then I'll start with the Urban Model.

So if I got it right the Test looks like this in coast down and viceversa.
110-100 - *seconds
100-90 - *seconds
90-80 - *seconds
80-70 - *seconds
70-60 - *seconds
60-50 - *seconds
50-40 - *seconds
40-30 - *seconds
30-20 - *seconds
20-10 - *seconds
10-0 - *seconds

What about shifting when going 0 - 100km/h? Is it taken in consideration?

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Sprinter

Discussion Starter · #7 · Apr 24, 2012

Republic of Moldova.

So i come with more numbers. 140km at most during a day. 7 trips by 20km, with 40 minutes break between them. I saw there are chargers capable of 8kwh output. so the battery pack should provide a 100km range.

The question is how much w/km usage... Is it correct to state that if the mass doubles it will use roughly twice as much watts? (guess not).

Any ideas how I can calculate?

Thanks again, Mike.

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Sprinter

Discussion Starter · #9 · Apr 26, 2012

I've read all those threads. The conclusion is you can't (I mean real usage), wright?

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