The good oil on gas
Dual-fuel kits for trucks, burning natural gas and diesel mixes, deliver grunt with a green touch
diesel. Gas burns cleaner than diesel and, additionally, running a mix can extend engine oil change intervals.
It is also possible for a converted truck to run on diesel alone, which will be of comfort to operators worried about running out of gas between filling stations.
Operators can run compressed natural gas (CNG) or liquefied natural gas (LNG), deciding on which gas to use when the system is fitted.
A division of Kleenheat Gas, Evol LNG says the dual-fuel set-up can reduce CO emissions by up to 12 per cent. The company says fuel savings will depend on operating circumstances.
It claims the system can ‘‘ displace’’ 40 to 60 per cent of normal diesel consumption with gas. CNG and LNG are significantly cheaper than diesel although the gases do not produce the same energy as the same volume of diesel.
As most operators buy gas in bulk at cheaper rates, rather than just pulling up at the bowser, calculating the fuel and cost saving is not a clear-cut proposition.
Operators can get more range out of LNG than CNG but both gases need larger tanks to match the mileage of a diesel-only truck.
One B-double fitted with V5000HD carried two 410-litre rail-mounted tanks, diesel on one side and LNG on the other side, for a combined range of around 800km.
V500HD is not the only dual-fuel system available but Evol LNG claims it offers a simpler and more affordable system than competitors.
Tanks for the economy: Evol’s set-up blends natural gas, compressed or liquefied, with diesel