In this developing region, low-grade fuels are used to meet high demands for food, and energy.

However, the engine's power output when running on low-grade fuel was too low for the Army's uses.

Oil shale has also been burnt directly as a low-grade fuel.

Blast furnace gas is what is called a low-grade fuel.

"Too many asteroids are just ice chunks, low-grade fuel.

Moving beyond that, use of low-grade fuels can lead to serious maintenance problems because of their high sulphur and lower lubrication properties.

The water was heated with low-grade fuels such as peat and coke, with houses built in groups of four for better efficiency.

American cars wheezed and clattered through the streets, their turbines laboring under the low-grade fuels.

And a low-grade fuel?

Low-grade fuel.

Although the attempt of shale oil distillation failed, oil shale was used as a low-grade fuel.

Power generating plants could be situated far away from populated areas in places where low-grade fuels such as coal could be burned.

It also increased sales of low-grade fuel oil and diesel fuel to the truckers who ply their trade through Habur Gate.

Low-Grade Fuel for Turbines: Gas turbines burn mainly natural gas and light oil.

It was used in pre-Roman times in the Kimmeridge Bay area of Dorset, England as a low-grade fuel and as a material for craftsmen.

Most diesel engines that power ships like supertankers are built so that the engine can safely use low-grade fuels due to their separate cylinder and crankcase lubrication.

With the consistency of mud and sulfur levels 3,000 times that of gasoline, these low-grade fuels must be heated simply to allow them to move through pipes to enter the engine cylinders.

Oil shale can also be burnt directly in furnaces as a low-grade fuel for power generation and district heating or used as a raw material in chemical and construction-materials processing.

BY TINKERING with the complex atomic frameworks of minerals called zeolites, chemists have developed catalysts that can turn low-grade fuels into petrol and useful raw materials.

Air quality deterioration is related to more extensive use of coal in combined heat power plants instead of natural gas, using low-grade fuels in households, and growing vehicle fleet that involves many old, poorly maintained vehicles.

He quit the job at the gas station when he discovered the owner was purposely mislabeling low-grade fuel as high-grade, fearing he might be caught up in the legal consequences should the fraud be discovered.

Given the extreme problems Germany had with fuel supplies late in the war, use of low-grade fuels, no matter how much of it was needed and used, was actually seen as a major advantage, and the primary reason the Heereswaffenamt eventually became interested in the design.