BOMBARDIER SEA-DOO GTX RFI 5666 1998, Руководство пользователя

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Section 04 FUEL SYSTEM
Subsection 02 (FUEL INJECTION)
04-02-2
The Rotax Fuel Injection (RFI) is a semi-direct
electronic fuel injection system.
Fuel is injected into each cylinder through the rear
transfer port. With this design, the injector is not
exposed to high combustion pressure, tempera-
ture and contaminants. The injector should run
cleaner and longer service intervals.
This system delivers the following benefits:
– easier cold engine starting (no choke)
– easier hot engine starting
– better throttle response
– better fuel economy
– no fuel valve
This system has the advantage of optimizing the
engine power, fuel economy and emission con-
trols under all engine operating conditions by
managing both the fuel injection duration and igni-
tion timing.
The Rotax Fuel Injection (RFI) is composed of the
3 following basic systems: Air Induction, Fuel De-
livery and Electronic Management.
AIR INDUCTION
A single throttle body (56 mm) breath through the
air intake silencer to provide a sufficient amount
of air for the engine operation.
THROTTLE BODY
FUEL DELIVERY
An electric fuel pump supplies the fuel to the fuel
rail and injectors.
FUEL PUMP
A regulator maintains a constant fuel pressure of
400-414 kPa (58-60 PSI).
REGULATOR
A dual piece fuel filter protects the fuel pump, reg-
ulator and injectors.
1. Fuel pump assembly
2. External fuel filter
F07F08A
F07F0JA
F07F0IA
F07F0KA
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