JCB EcoMAX Engine Installation Manual
Page 24 of 64 320/A9164-1 © JCB Power Systems Ltd.
7.2.5 Fuel Temperature
Do not install the fuel pipes and hoses close to hot surfaces such as exhaust pipes.
When the engine senses that the fuel temperature is too high, the control system reduces
the torque of the engine and therefore the heat rejected to the returned fuel. This is to protect
the fuel injection equipment from damage. Therefore a fuel cooler maybe required to stop
the engine from ‘de-rating’. Refer to the Technical Data Sheet for the fuel temperature at
which the engine de-rates and the heat rejected to returned fuel.
Fuel coolers are not normally needed on these engines due to the high by-pass fuel flow
characteristics. During the cooling trail of the engine in its final installation the fuel
temperature should be recorded to ensure it doesn’t reach the ‘de-rate’ limit.
Diesel fuels have a cloud point at which wax crystals begin to form. Below this temperature,
problems may result from these crystals partially or completely blocking the system. It is
possible to install an electric heater adjacent to the engine mounted fuel filter for extreme
temperature situations.
N NOTE! Refer to JCB Power Systems Applications department for more advice.
7.2.6 Fuel Lubricity Additive Dosing Filters
A lubricity additive dosing filter unit is available for use with low lubricity fuels. Diesel fuel
specification EN590 states a lubricity limit of 460 µm (wear scar diameter), for fuels with
wear scar values higher than 500 µm, fitment of a lubricity dosing filter is recommended.
N NOTE: Please contact JCB Power Systems Applications Department for more
information and advice on installation and expected regional fuel conditions.
To Next Page
Loading...
