Engines - Troubleshooting and Maintenance Flashcards
What is the main purpose of an electronic engine control system?
To monitor and control the engine and shut it down in the event of a critical alarm without operator assistance.
This system acts as a warning or shutdown mechanism, ensuring safety during operation.
What are the common power supply voltages for electronic engine control systems?
12V, 24V, or 110 volts.
These voltages are standard for powering control systems in various engine setups.
What type of switches are typically used in electronic engine control systems?
Mechanically operated and electronically controlled switches.
This combination allows for reliable operation and integration with electronic monitoring.
Name three parameters monitored by the electronic engine control system.
- Low coolant level
- High coolant temperature
- Low oil level
These parameters are critical for maintaining engine safety and performance.
What happens if the engine control system detects low coolant level?
The engine will shut down.
This is a safeguard to prevent engine damage due to overheating.
Fill in the blank: The electronic engine control system flags the cause of the shutdown on the _______.
Control panel
True or False: The electronic engine control system can only monitor oil levels.
False.
It monitors various parameters including coolant levels, oil pressure, and engine temperature.
What is monitored regarding oil in the electronic engine control system?
- Low oil level
- Low and/or high oil pressure
- High oil temperature
These factors are essential for maintaining optimal engine lubrication and preventing damage.
What role does the engine tachometer play in the electronic engine control system?
It monitors engine speed and can trigger a shutdown if overspeed occurs.
This is important for preventing engine damage from excessive RPMs.
What aspect of the turbocharger is monitored by the electronic engine control system?
Turbocharger control and turbo boost protection.
This ensures that the turbocharger operates within safe limits.
What is indicated by the presence of onboard diagnostic sensor malfunctions?
The electronic engine control system will trigger a shutdown.
This is crucial for diagnosing issues before they lead to engine failure.
What four parameters related to engine performance are monitored by the electronic engine control system?
- Air inlet pressure
- Exhaust temperature
- Engine throttle control
- Fuel and air shutoff
These parameters are vital for optimizing engine efficiency and performance.
What type of switches are most commonly used in engine control systems?
Mechanically operated and electronically controlled switches
This type of switch combines mechanical operation with electronic monitoring for efficiency.
What would happen if an engine control system triggered on a low coolant level?
Low coolant level (shut down)
The system shuts down to prevent damage when coolant levels are too low.
What happens when high coolant temperature is detected on an engine?
Shut down
High coolant temperatures can lead to engine overheating and damage.
What does the control panel monitor regarding oil levels?
Low oil level (shut down)
Insufficient oil can lead to engine failure, prompting a shutdown.
What condition triggers a shutdown related to oil pressure?
Low and/or high oil pressure (shut down)
Abnormal oil pressure can indicate potential engine damage.
What is monitored concerning oil temperature?
High oil temperature (shut down)
Elevated oil temperatures can affect lubrication and engine performance.
What parameter relates to engine speed monitoring?
Engine over speed (shut down)
Monitoring engine speed helps prevent over-revving, which can cause engine damage.
What does turbocharger control monitor?
Turbo boost protection (shut down)
Protects the engine from excessive turbocharger boost that can cause damage.
Which parameter indicates potential mechanical issues in the engine?
Engine and compressor vibration (shut down)
Excessive vibrations can signal mechanical failure or imbalance.
What triggers a shutdown related to diagnostic sensors?
On board diagnostic sensor malfunction (shut down)
Malfunctions in diagnostic sensors can prevent proper engine operation.
What does the control panel monitor about air intake?
Air inlet pressure
Proper air inlet pressure is crucial for efficient engine combustion.
What temperature is monitored in the exhaust system?
Exhaust temperature
Monitoring exhaust temperature can indicate engine performance and efficiency.