7.3) Fuel system
Fuel flow
The fuel is pumped in the fuel rail 1/3 feed line (2). From there it
passes the both fuel rails (connected by the fuel hose (4)), the
fuel regulator and escapes thru fuel rail 2/4 outlet line (1). The
supply of the injectors (5) is done by the fuel rails. The fuel pres-
sure regulator (6) ensures that the pressure differential between
the fuel injectors and the intake manifold remains constant. This
allows injecting same quantity of fuel independent from the op-
erational state.
Figure 5: Fuel system
1 Fuel rail 2/4 outlet line 2 Fuel rail 1/3 feed line
3 Fuel rail 4 Fuel hose
5
Injection valves
6
Fuel pressure regulator
Page 7-6
December 01 2017
BRP-Rotax Effectivity: 915 i A Series
Edition 0 / Rev. 0
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