Variable geometry intake
Function
Extend or shorten the engine inlet ducts to in-
crease the inlet air quantity according to the engine
revs.
Operation / operating principle
The system consists of:
•
two inlet ducts for each manifold, which
may be joined (long ducts) or separa-
ted (short ducts);
•
a motor that, by means of an endless
screw, activates the upper part of the
inlet ducts;
•
a variable geometry control unit for
managing the system, interfaced with
the engine injection control unit.
At key-ON, the variable geometry control unit low-
ers the ducts (if still in the raised position). Subse-
quently, depending on the control voltage on PIN
2 from the injection control unit (0V down, 5V up),
the control unit drives the electric motor with the
relative polarity for raising or lowering the ducts.
The drive voltage delivered to the motor is deter-
mined in relation to battery voltage and the motor
is stopped once a given current limit is reached or
if the time-out period of 500 ms has elapsed.
Level in wiring diagram:
Variable geometry
Location:
•
on the vehicle: ducts and motor inside
the filter box, variable geometry control
unit on rear frame under the saddle,
right side.
•
variable geometry control unit connec-
tor: on the control unit.
•
connector of the electrical motor cable
to the engine cable harness: outside
RSV4 Factory
Electrical system
ELE SYS - 151
Summary of Contents for RSV4 FACTORY
Page 1: ...SERVICE STATION MANUAL 894159 RSV4 Factory ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 52: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 60: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 83: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 92: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 224: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 244: ...INDEX OF TOPICS ENGINE ENG ...
Page 350: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 361: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 399: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 422: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 434: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 444: ...INDEX OF TOPICS BODYWORK BODYW ...
Page 470: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 475: ... Fit the two seater saddle RSV4 Factory Pre delivery PRE DE 475 ...