Multifuel Engine

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Multifuel Engine


an internal-combustion engine designed to operate on a variety of petroleum fuels, from gasoline to diesel fuel.

The first multifuel engines were developed in the 1930’s in Germany. They were based on a carburetor engine but had separate air and fuel supplies. The air was sucked into the cylinders, but the fuel was injected by a pump at a pressure of about 5 meganewtons per sq m (MN/m2), or 50 kilograms-force per sq cm (kgf/cm2). The engines were started on gasoline, using a carburetor that was cut out during normal operation. The mixture was ignited by an electrical ignition system. In the 1940’s multifuel engines based on automobile diesel engines were developed. The fuel was supplied by a pump at a pressure of about 21 MN/m2 (210 kgf/cm2). When shifting from one fuel to another the supply from the pump was adjusted to give the same consumption of fuel by weight, thereby maintaining the same engine power.

The use of multifuel engines in motor vehicles and tractors greatly extends their fuel resources. Such engines have better fuel economy than carburetor engines but are inferior to diesels. Among their disadvantages are complexity of design and the need for careful monitoring of the fuel-supply system during operation. They are used extensively abroad, especially in the Federal Republic of Germany.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Once the SilentHawk's electric battery is dead, or close to dead, the system will switch to the multifuel engine to allow the battery time to recharge, Dzwill said.
5) Burger, P., BaAta, J., and Valle, R., "Performance Study of a Multifuel Engine Operating Simultaneously with CNG and Ethanol in Various Proportions," SAE Technical Paper 2008-36-0284, 2008, doi:10.4271/2008-36-0284.
A multifuel engine accepting JP-8 or Jet-A, it is linked to an automatic transmission and has a 113-litre fuel tank that ensures a range of over 500 km.
Army's HAMMER (Hydraulic Hybrid, Advanced Materials and Multifuel Engine Research), the program is aimed at reducing fuel consumption in military ground vehicles.
* The Hydraulic Hybrid, Advanced Materials, and Multifuel Engine Research program with Eaton Corporation's Hydraulic Launch Assist system
The S-100 is currently powered by a 41-kW avgas-fuelled Wankel-type engine, but a multifuel engine is expected to be certificated by 2012.
2si is in production on a new two cylinder multifuel engine, the model 460MF-37 weighs a mere 93 lb.
Nissan Industrial Engine Operations (NIEO) said it will launch a more powerful version of its existing 4.2 L, in-line, six-cylinder TB 42 multifuel engine. The new TB 45 engine will have a 4.5 L displacement and be rated at 160 hp, but will share the same configuration and dimensions as its predecessor, eliminating re-engineering costs for OEMs.
"It is a multifuel engine," said Tom Bitner, automotive lead on the United Defense automotive program development team.
Early indications are that NACCO will leave that operation, which also includes the Nissan Industrial Engines multifuel engine program, intact.
Works are also conducted on multifuel engines where, in order to initiate ignition, gasoline is injected into the intake port and the diesel fuel into the cylinder.

Full browser ?