You must consider the following when selecting an engine:
Application: e.g. water pump
Hp or kW required e.g. 20 hp
Speed e.g. 2500 rpm
Direct coupled or v-belt e.g. direct coupled by flexible coupling
Ambient conditions e.g. up to 40c , 30% humidity
Site conditions e.g. under cover on farm site
Duty – continuous or intermittent e.g. continuous 2500 hrs per year
Other factors e.g. Side loads, vibration, electrics, maintenance and service plan, noise levels, shock loads, exhaust emissions etc.
Standardconditions:20°c ambient temperature, 30% relative humidity at 100 mtrsaltitude.
Grossintermittentrating:1 hr rating based on engine without cooling fan, air cleaner, muffler, butwith
Netintermittentrating:1 hr rating based on engine with standard cooling fan, air cleaner, mufflerand
alternator, fitted to engine
Netcontinuousrating:Continuous output based on engine with standard cooling fan, aircleaner,
Muffler and alternator fitted.
De-rating:Refer to DPS. Allowance for changes to standard conditions being ambient temperature, relative humidity and altitude.
TransmissionFactors:Allowance for power losses in the transmission system e.g. Belt andpulley
losses, flexible coupling losses, gearbox transmission losses etc.
If you require help in selection or want your engine selection checked, please ask.
For information on engine installation, selection and general specifications and dimensions by model, engine performance curves including fuel usage details, engine operating systems, check lists etc, please contact us at hiersun power email: firstname.lastname@example.org