horsepower-hour


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Related to horsepower-hour: kilowatt hour

horsepower-hour

A unit of work or energy equal to the work done by a machine having a power output of 1 horsepower over a period of 1 hour.
References in periodicals archive ?
To limit exhaust emissions to less than 1 gram per brake horsepower-hour of NOx, each G3612 engine employs a pre-combustion chamber design which facilitates burning of a lean 18:1 air/fuel mixture in the main combustion chamber.
10 grams per brake horsepower-hour -- or g/bhp-hr) currently in effect for newer model heavy-duty trucks.