Green Car Congress  
Go to GCC Discussions forum About GCC Contact  RSS Subscribe Twitter headlines

« Canadian Biofuels Quality Registry | Main | New Delphi 1,800-bar Diesel Common Rail System »

Print this post

GM Holden Launches Dual-Fuel (LPG-Gasoline) Commodores

8 September 2005

Holdencommodore
GM Holden Commodore

GM Holden (Australia) is launching new dual-fuel versions of its large sedan and wagon, the Commodore, featuring a newly-developed version of its 3.6-liter Alloytec V6 (one of GM’s global engines).

The engine is modified to run on gasoline and LPG, using a new injection system, new valves and hardened valve seats designed for LPG operating conditions.

The LPG system uses gasoline on start up, then automatically transfers to LPG, if selected, once the engine has warmed up.

Based on the Executive model, the LPG-powered Commodore uses a sequential vapor gas injection (SVGI) which injects gas directly into the air intake runner, eliminating excess gas circulating through the air intake system.

The SVGI system gains further efficiencies by mimicking the gasoline injection sequence, allowing engineers to achieve power and torque figures close to theoretical LPG maximum efficiencies.

(SVGI systems are used in LPG conversions and dual-fuel systems from a variety of vendors.)

GM Holden engineers strove to provide a seamless transition from petrol to LPG while driving, with no discernible power difference. Like the gasoline-only model, the engine fueled by LPG power delivers 175 kW (235 hp) with 320 Nm (236 lb-ft) of torque.

Gasoline fuel economy figures remain unchanged at 11.1 liters/100km (21.2 mpg US) (sedan) and 11.3 liters/100km (20.8 mpg US)(wagon). LPG fuel economy is 14.4 liters/100km (16.3 mpg US) (sedan) and 14.8 liters/100km (15.9 mpg US)(wagon).

With the increase in oil prices, there is a resurgence in interest in LPG as a fuel.

ABC Rural in Australia reports that demand for LPG conversions in the country have increase about 20% on average, with some areas higher than that.

In New Zealand, One News reports that inquiries about converting to LPG have quadrupled in recent months, reminiscent of the last oil crisis 25 years ago.

September 8, 2005 in Australia, LPG | Permalink | Comments (1) | TrackBack (0)

TrackBack

TrackBack URL for this entry:
http://www.typepad.com/services/trackback/6a00d8341c4fbe53ef00d8349ceb4869e2

Listed below are links to weblogs that reference GM Holden Launches Dual-Fuel (LPG-Gasoline) Commodores:

Comments

I'm not underestimating the amount of effort required to reach almost the limit of what LPG can offer. A lot of respect to the engineers who'se lap this project was thrown upon.
But LPG is a non-renewable resource. Its cheap now, but it won't be when the oil thins further and people jump at LPG in larger numbers.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Green Car Congress © 2013 BioAge Group, LLC. All Rights Reserved. | Home | BioAge Group