Blue Bird Coachworks 450 LXi, Руководство пользователя

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450 LXi Owner Manual 5-1 Engine Operation
Rev. “C”
~ 5-1-19 ~
5-1.7.3 Programmable Options and Systems Operation
The engine can be programmed to the following modes:
“OFF”
“Warning”
“Warning/Derate”
“Warning/Derate/Shutdown”
“Warning”
The “DIAGNOSTIC” lamp and the warning signal (red lamp or buzzer) turn “ON” and the warning signal is activated
continuously in order to alert the operator that one or more of the engine parameters is not within normal operating range.
“Warning/Derate”
The “DIAGNOSTIC” lamp turns “ON” and the warning signal (red lamp or buzzer) is activated. After the warning, the engine will
derate rpm and power. The warning lamp will begin to fl ash when the derating occurs.
When the engine is fully derated, the engine power is limited to 120 kW (160 hp). During a low oil pressure condition, the
engine can be limited to 1350 rpm.
“Warning/Derate/Shutdown”
The “DIAGNOSTIC” lamp turns “ON” and the warning signal (red lamp or buzzer) is activated. After the warning, the engine
will derate rpm and power. The engine will continue to derate rpm until a shutdown of the engine occurs. The engine can be
restarted after a shutdown for use in an emergency.
A shutdown of the engine may occur in as little as 20 seconds. The engine can be restarted after a shutdown for use in an
emergency. However, the cause of the initial shutdown may still exist. The engine may shut down again in as little as 20
seconds.
If there is a signal for coolant loss, there will be a 10 second delay in order to verify the condition. The system will derate the
engine rpm for 40 seconds before the engine will shut down if the engine has been programmed to shut down.
If there is a signal for low oil pressure or for coolant temperature, there will be a two second delay in order to verify the
condition. The system will derate the engine rpm for 30 seconds before the engine will shut down if the engine has been
programmed to shutdown.
For more information or assistance for repairs, consult your Caterpillar dealer.
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5-1.7.4 Cold Start Strategy
These engines use a cold start strategy that limits power until the coolant temperature reaches 28°C (82°F). This cold start
strategy is called cold mode. The electronic system will automatically idle the C13 engine at 800 RPM. Cold mode will also
vary the fuel injection amount, the timing for the maximum start-up, and the timing for the control of white smoke. Cold mode
will provide reduced emissions and reduced warm-up times. Cold mode will be disabled and the engine rpm will drop to the
programmed low idle speed if the throttle, the service brake, or the clutch is depressed.
The engine should be operated at low rpm and low power demand until the engine reaches normal operating temperature.
The engine will reach normal operating temperature faster when the engine is operated at low rpm and low power demand
instead of idling the engine until the engine reaches normal operating temperature.
WARNING!!
If the Warning/Derate/Shutdown mode has been selected and the warning indicator activates,
bring the engine to a stop whenever possible. Depending on the application, special precautions should be taken
to avoid personal injury.
NOTE: The Customer Specifi ed Parameters may be secured by customer passwords. The engine may have
all of the parameters that are programmed or any combination of the parameters that are programmed. Refer to
“Customer Specifi ed Parameters”
section in this manual for more information on the programmed parameters of
the engine. Refer to the Electronic Troubleshooting for more information.
NOTICE: A coach should not be moved until it is out of the cold mode. If the coach is operated while in cold
mode, power will be noticeably reduced.