indicated horsepower

American  

noun

1. the horsepower of a reciprocating engine as shown by an indicator record. ihp, IHP

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indicated horsepower British  

noun

1. the power output of a piston engine calculated from the mean effective pressure in the cylinder as derived from an indicator diagram and the speed of the engine in revolutions per minute

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Etymology

Origin of indicated horsepower

First recorded in 1870–75

Example Sentences

The indicated horsepower of the "Titanic" was 50,000, developed in two reciprocating engines driving two wing propellers and a single turbine driving a central propeller.

From Scientific American • Apr. 11, 2012

All engines are designed to give the best economy at a certain developed indicated horsepower called full load.

From Steam Engines Machinery's Reference Series, Number 70 by Anonymous

The friction load is then computed in horsepower from the indicator cards, and subtracted from the indicated horsepower when loaded.

From Steam Engines Machinery's Reference Series, Number 70 by Anonymous

The delivered horsepower divided by the indicated horsepower gives the mechanical efficiency.

From Steam Engines Machinery's Reference Series, Number 70 by Anonymous

In the rolling mill, measuing 64 by 38 feet, three double-cylinder engines, working up to 293 indicated horsepower, give motion to 18 pairs of rolls, rolling four to six tons of steel per week.

From The Story of the Invention of Steel Pens With a Description of the Manufacturing Process by Which They Are Produced by Bore, Henry