Before the war there was no standard rating for internal-combustion engines, each manufacturer rating his motors according to his own ideas.
Our studies of small engines of the type used for driving pumps or operating woodworking and metal-working machines resulted in many improvements, which have been adopted by the manufacturers of internal-combustion engines.
The most satisfactory of the liquid fuels for use in internal-combustion engines, are alcohol and the light refined hydro-carbon oils, such as gasoline.
At present little is known as to how far many of the very cheap distillates and crude petroleums can be used as fuel for internal-combustion engines.
Tests of liquid fuels in internal-combustion engines, in charge of Mr. R.
All successful oil and gas engines are at present internal-combustion engines, the fuel being burned in a gaseous form inside the working cylinder.
Very numerous attempts have, however, been made to construct internal-combustion engines to burn solid fuel instead of gas.
When on the surface the submarine may be propelled by steam, internal-combustion engines, or any other kind of motive power adapted to the propulsion of surface ships.
This vessel was fitted with internal-combustion engines instead of steam, and was finally accepted by the United States Government in lieu of the Plunger, and placed in commission in 1900.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "combustion engines" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.