Can you lpg a diesel car

Email us Find a store View all contacts. Business membership benefits We support our business members with benefits to save you money. Compare options We have five Roadside Assistance options allowing you to choose the one that best meets your needs. Get help now Broken down and need our help? Get emergency Roadside Assistance now. Roadside Assistance for electric vehicles ,,,.

How it works What's included in your Roadside Assistance cover. Roadside for business We have a range of products to suit the roadside assistance needs of your business or fleet. Get insurance quote Retrieve a quote. Register here. Claims Weather event claim notification Home insurance claims Car insurance claims Pet insurance claims More Insurance discounts Insurance disclosure documents More The Queensland roadtrip is back Queensland must do's. Travel events Discover your next dream holiday.

Travel Insurance Get the cover you need for your holiday and find out how you can save with a members discount. Peoples choice tourism awards Experience and Services Accommodation Terms and conditions. Popular items Home Rescue Home Rescue. Latest alerts Tips to stay safe online. Navigation Membership. All you had to do was clamp an LPG tank behind the cab; connect a hose that ran, via a ball valve in the cab, into the engine air intake, to control the gas flow.

When the truck driver encountered a climb he simply opened the valve and, presto, instant hill-conquering torque. The LPG flow was arbitrarily driver-controlled and it was very easy to overdo the gas injection. Too much combustion heat had the inevitable consequences: stretched head bolts, warped heads, burnt valves, cracked pistons and liners, blown manifolds and turbos and under-bonnet fires started by glowing exhausts.

The latest LPG-fumigation systems employ the torque-topper principle, but electronic control takes arbitrary gas-dosing out of the equation. The cooker hose is replaced by SAA-compliant, flexible piping and the arbitrary ball-valve, by the combination of an LPG converter, a control valve and a gas lock-off valve, plus electronic control.

The gas components are controlled by an under-dash electronic control unit ECU that acts on sensor inputs of throttle position, brake-pedal position, manifold pressure and engine speed. The engine fires up and idles on diesel. Gas enters the air intake in increasing volume as the accelerator pedal is depressed, up to a pre-determined level that is normally set between 20 percent and 30 percent of diesel flow rate.

The components fit unobtrusively into most 4WDs. Also under-bonnet are a lock-off valve and control valve. Even if the 'top end' of a Diesel has been fully reworked, the crankshaft, bearings and connecting rods to mention but a few components will suffer higher stresses at increased RPM necessary when running on LPG.

Mechanical breakdown may result in far less time, whilst increased wear and reduced component life are certain. FinaIly, note that in all of the above cases the converted engine will cannot be a true Diesel or even a dual fuel engine as it will have lost its higher compression ratio and the means to inject Diesel. Conclusion The above factors combine along with many others not discussed here to make actual conversion of most Diesel engines uneconomic.

It would be simpler and quicker to fit a Petrol engine. To mix LPG with the existing Diesel fuel before induction Fumigation, not Conversion Various attempts have been made to achieve this with varying amounts of success.

Go LPG! There are other problems to consider as well - The unmodified Diesel engine was relatively slow-revving, producing its maximum torque at lower RPM than a similar Petrol version. This is not the case when it is converted to run on Diesel and LPG mix. The crankshaft, bearings and connecting rods to mention but a few components were all designed to rev. Given the low overall savings achieved to date and the cost of the adaption often equal to that of an injected Petrol engine conversion many miles would have to be covered before any real savings are realised whilst reliability has been reduced.

This does not seem to be an economically viable alternative. As world Diesel prices continue to rise sharply, there may be more economic benefit in mixing LPG with Diesel. We are still waiting to see a system that works well and comes with audited figures for reliability and the cost savings achieved.