linear generator engine
 

A new type of engine for hybrids:

https://www.youtube.com/watch?v=iBwIMl917is

I wonder what the net recovery to recharge the batteries would be from the linear generator.

Problems include ignition timing, and the 'air springs' generating heat. Here's a solution from Toyota:

Green Car Congress: Toyota Central R&D developing free-piston engine linear generator; envisioning multi-FPEG units for electric drive vehicles

http://bioage.typepad.com/.a/6a00d83...9af6970b-450wi

In the 2006 EPA documents the efficiency of free piston engines was calculated to be 58%.

OMG, A FREAKIN TWO STROKE. YOU CAN'T POSSIBLY GET IT TO PASS EMISSIONS.

A quote from DOE documents sent to me stating that a rotary engine (not wankel) could never be built that would pass emissions in the US.

Google INNAS Chiron, direct hydraulic pressure free piston engine and a drive design with close to 3 times the regenerative efficiency of gas electric hybrids.

So today, when proposed by Toyota, everything is copacetic.

regards
mech

I like the opposed piston design, less heat loss to the head, well theres no head. Could have a genrenerative gas spring where waste exhaust heat is added near bdc.

I imagine we might see some microturbines and micro-generators with a fixed power output and much better efficiency (esp with cogen) i.e. ~%60 fuel to electric. I don't know if this is gonna make it into production. As an aside, it is hard to get %93 mechanical to electrical efficiency in a hydraulic pump at 800,000 rpm :D

https://www.academia.edu/5905748/MIC...RO_GAS_TURBINE

Constant power turbine not a new idea:

An Electric Car That Hardly Needs Batteries - Businessweek

http://articles.latimes.com/1997/nov...iness/fi-55325

https://www.youtube.com/watch?v=xG66JQmdMv8

http://forums.pelicanparts.com/uploa...1323296049.jpg

At 0:24 seconds—that thing is/was loud!