# New Engine Designs with Variable Compression Ratio

**URL:** <https://community.cartalk.com/t/new-engine-designs-with-variable-compression-ratio/32838>\
**Category:** Maintenance/Repairs\
**Created:** [July 4, 2009, 5:04am UTC](https://community.cartalk.com/t/new-engine-designs-with-variable-compression-ratio/32838 "2009-07-04T05:04:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rfgriffith](https://avatars.discourse-cdn.com/v4/letter/r/fbc32d/32.png) [@rfgriffith](https://community.cartalk.com/u/rfgriffith)\
**Post date:** [July 4, 2009, 5:04am UTC](https://community.cartalk.com/t/new-engine-designs-with-variable-compression-ratio/32838/1 "2009-07-04T05:04:54Z")

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How could the US auto industry introduce the available high efficiency engines designed by several organizations. These engines produce much more power, perform best on high knock-rated fuel, such as ethanol, and are about two times more efficient than current fixed compression ration engines. Richard Griffith  
  
  
  
 I am an independent energy consultant. My phone no. is 952 941-3738. My address is 7009 Comanche Court, Edina, MN 55439  
  
  
  
 The following website has an example of a good VCR engine design:  
  
  
  
 [http://www…\_29\_01.pdf](http://www1.eere.energy.gov/vehiclesandfuels/pdfs/success/vcr3_29_01.pdf)