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Old 23rd April 2015, 12:09   #1
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Default Levant USA: Energy-generating dampers (shock absorbers)

Hello Everyone, I happen to view this post which is very interesting. Moreover it is Bingo for Indian Roads. Please click on the link below:


Last edited by GTO : 23rd April 2015 at 21:01. Reason: Adding Video :)
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Old 23rd April 2015, 13:01   #2
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Default re: Levant USA: Energy-generating dampers (shock absorbers)

It is actually a very good idea.
All the movement in shock absorbers are ultimately damped in the damper.
And guess what - damper's job is to dissipate mechanical movement into heat.
Which means it is lost.

The catch is:
For a heavy truck, with six of their prototype shock absorbers fitted to it, they could generate up to an average of 1 KW per shock absorber on a standard road.
For a heavy truck - weighing some multitude of tonnes - requiring 100-200 kW of engine power - one is able to save only about 5kW.

So doing some very elementary calculations:
1. results in saving of about 5kW for 10 tons
2. my car is about 1 ton, therefore my saving will be 0.5kW
3. petrol calorific value is 44 kJ/gram. Petrol density is about 0.750 g/ml, therefore calorific value = 33 kJ/ml
4. which means I will save about 0.015 ml of petrol per second.
5. but since petrol engine is inefficient - i will actually save about 5 times more than that (assuming 20% efficieny of the petrol engine): 0.075 ml per second

Let see how much driving I will actually do: assuming a set of dampers will last about 60000 km:
1. Average speed about 30 kmph,
2. therefore total time = 2000 hours

2000 hours = 7200000 seconds.
I save about 540000 milliliters of petrol, in other worlds 540 litres.
540 Litres of petrol should be roughly worth Rs 32400.

As a user of this product, as long as all my 4 dampers are not priced higher than Rs 32000 above the cheapest alternative - it is profitable. Unfortunately, for most users, this figure gets lost among other things - therefore they may not place as much economic importance.

For the seller it makes sense for him to price it not more than 50% of the benefit value. That means Rs 16000 per 4 dampers. Neat profit! And this is above the industry average margin on sale of plain old dampers.

Last edited by alpha1 : 23rd April 2015 at 13:06.
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Old 23rd April 2015, 13:34   #3
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Default re: Levant USA: Energy-generating dampers (shock absorbers)

I had heard about this concept earlier but it was good to know a little about the way they went about it and the technology used.

Any idea about how this would reduce fuel consumption? Is it a virtual saving ?

Last edited by navsjab : 23rd April 2015 at 13:37.
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Old 23rd April 2015, 14:40   #4
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Default re: Levant USA: Energy-generating dampers (shock absorbers)

Cant we just fix the damn potholes!

India, we need to get us a lot of these machines!

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