Self Assessment

Engine Management

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Q: On modern engine management systems, what supply voltage range would you expect to see in most sensors.
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Q: What is the function of an oxygen sensor fitted to a petrol engine?
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Q: What is the minimum and maximum normal operating voltage of a Zr O2 sensor?
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Q: What is the peak voltage you would expect to see on an oscilloscope from a solenoid operated injector?
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Q: On vehicles fitted with a secondary air jet system, what is the purpose of this design?
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Q: What gas has the EGR system been designed to reduce the production of?
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Q: How does the EGR system reduce exhaust gas pollutants?
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Q: If the fuel regulator return valve on a system with manifold vacuum control has a rating of 3 bar, what fuel pressure reading would you expect to see on a gauge at idle with a manifold depression of 400mb from atmospheric pressure?
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Q: What type of wave form would you expect to see from a hall effect sensor when checked using an oscilloscope?
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Q: Which two of the following functions cannot be assessed by checking the injection duration time signal?
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