Fuel System
Feed pump
Feed pressure at 900 rpm min 100 kPa (14.5 psi)
Feed pressure at 1800 rpm min 300 kPa (43,5 psi)
Feed pressure at full load min 300 kPa (43,5 psi)
Bypass valve
Opening pressure 400-550 kPa (58–80 psi)
Fuel quality requirements for emission legislation stage 5, diesel engines with exhaust
aftertreatment system
General requirements
Volvo Penta diesel engines are certified for compliance with emission legislations with the diesel test fuels
specified by law. These fuels correspond with diesel fuel standards EN 590, ASTM D975-2D and EN15940. Volvo
Penta engines will be compliance with emission legislation, if the engine is maintained according to service
instructions and used according to intended purpose.
It is the responsibility of the fuel suppliers to always ensure that their fuels meet relevant requirements and are
fit for their intended purpose. Their responsibility includes any use of additives for proper engine performance and
function.
Special requirements are placed on cold-flow properties, that is, temperature limit values of fuel filterability during
operation in winter conditions.
Restrictions for specified diesel fuels
98/70/EC is not fully specified in the fuel standard from an engine warranty perspective. Below mentioned fuel
parameters must be fulfilled.
• Max density for ASTM D975 No 2-D: 860 kg/m3
Insufficient density reduces the power and increases the fuel consumption. Excessive density endangers
the durability and function of the fuel injection equipment.
Paraffinic fuels - HVO and GTL
Paraffinic diesel fuels ("Synthetic Diesel") have higher cetane numbers and lower densities than diesel fuels. HVO
(Hydrotreated Vegetable Oils) is renewable paraffinic fuels. GTL (Gas-To-Liquid) is fossil paraffinic fuels. Volvo
Penta approves the use of paraffinic diesel fuels that fulfill the standard EN15940.
Volvo Penta also approves the use of fuel blends between these paraffinic fuels and diesel fuels that comply with
the quality requirements.
In general, the maximum torque and power output, depends on the density and heat value of the fuel. HVO and
GTL fuel may have a power/torque loss of a couple of % compared to EN590 fuel.
Technical Data
74 47713625 06-2021 © AB VOLVO PENTA
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