Showing posts with label combustion. Show all posts
Showing posts with label combustion. Show all posts

Thursday, 19 January 2012

The Green Overdrive Show: a super efficient engine (video)

New internal combustion engine with claimed 30-50% better fuel consumption is expect to have engines in cars on the road in 2013.

/ Pinnacle, Engines, 30, 50, percent, 30%,  50% /

Wednesday, 16 November 2011

Prius gets a low speed sound for the blind (video & audio)

At parking lot speeds, electric & hybrid cars are almost silent.  A risk to the blind, partially sighted & simply inattentive has been suggested.  Legislation has been mooted.  Toyota is doing something about the silence of the Prius at low speeds:


To date, there is no suggestion of doing anything about near-silent internal combustion engined cars.

Monday, 12 September 2011

Mazda's Skyactiv-G 1.3 gets 70mpg (US), No hybrid tech needed

update 15Aug2011

All of these fuel economy figures are better than a Prius hybrid!

Use of a 14:1 compression ratio & a continuously variable transmission (CVT) is suggestive of an Atkinson cycle internal combustion engine which is one of the major efficiency provisions in hybrids (Prius, Civic, Insight & Volt).  In those vehicles, an electric motor (combined with a CVT) is used to provide the low speed torque which Atkinson cycle lacks.
/end update

http://www.greencarreports.com/news/1065941_mazdas-skyactiv-g-1-3-gets-70mpg-no-hybrid-tech-needed

Fuel consumption figures used in the above article are a little confusing.   Miles per gallon numbers are based on the US gallon, which is of course, hardly unusual.  However, use of kilometers per litre, is in HHG2Tech's experience, unique.  Just for the record:

30 kilometers per liter = 70.57mpg (US) = 84.76mpg (UK) = 3.33 l/100km
56mpg (US) = 67.26mpg (UK) = 4.20 l/100km

All figures rounded to 2 decimal places.

And 56mpg (US) = 23.80 km/l if anybody cares.