In a diesel fuelled engine, where the fuel is burned, approximately how much of the heal energy generated by the fuel will be used to produce usable power?
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Air filter servicing is highly dependent upon the integrity of the system and the operation of a properly functioning vacuum indicator system.
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Running an engine in the wintertime with 30W oil in the bath air cleaner may result in:
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Which of the following may cause a low power complaint?
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The air intake plumbing on a vehicle should be checked periodically for leaks because air leaks between the air cleaner and turbo may cause:
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Excessive wear in the ring travel area of a cylinder liner may be caused by:
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An engine air induction system, where air entering the engine is not aided in any way other than the flow caused by a difference in pressure as the piston goes down on the intake stroke is said to be:
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What indication does an air restriction indicator give when the air filter needs servicing?
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The two stroke or 2 cycle diesel engine will not start without a:
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The purpose of the circular deflector vanes in the end of some dry elements or air cleaner housing is to:
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If the oil of an oil bath air cleaner is overfilled on a diesel engine, it may cause:
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In a dry air filter, the safety element must be changed every time the main air cleaner element is:
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The centreline of a fuel storage tank should be mounted on a slight angle so that:
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Starting fluid should not be used in combination with engines which have:
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As altitude and air temperature increase air will have:
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Due to the danger of _____________ emissions, engines being run indoors should be equipped with a properly vented exhaust system:
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Pre-combustion chambers may have a glow plug to:
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In heavy duty equipment, a pyrometer is an electro-mechanical device used to indicate:
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Fuel heaters should be thermostatically controlled because:
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A cold engine will often have excessive exhaust smoke:
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A technician finds that a diesel engine will not start, it turns over fine and there is smoke coming from the exhaust pipe but it refuses to start, all may be the problem except:
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Intake air may flow into some engines naturally without aid. Other engines have the intake air forced into the engine under pressure. These types of engines can be called:
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Leaks in the intake system after the turbo may result in:
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In comparison to a naturally aspirated engine, the compression ratio of a comparably sized super-charged or turbo-charged engine will be:
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After completing an installation of a new turbocharger a technician should:
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What is the principle and primary characteristics of a Roots type blower?
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What would cause oil to appear in the turbo crossover to the intake manifold?
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An engine should be idled for 3 minutes minimum after climbing a steep hill before shutting down to allow the ___________ to cool down:
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When installing a new turbo on an engine a technician should:
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The fan wheel on a turbocharger that forces intake air into the engine is known as:
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When checking turbocharger boost pressure the engine should:
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Technician A says that if a two stroke cycle diesel engine cranks over fine, there is a lot of smoke from the exhaust, but refuses to start the super-charger drive shaft may be stripped. Technician B says that a super-charger is not necessary for a two stroke cycle diesel to start. Who is correct?
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By turbocharging an engine, it is possible to have the volumetric efficiency greater than 1.
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An aftercooler is used on a turbo charged engine to:
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Turbo chargers are lubricated by:
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With a turbo charged engine, maximum boost occurs at:
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Turbochargers may be wastegated to increase performance and reduce turbo lag.
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When an engine is turbo-charged the air temperature of the intake air increases. Increased intake air temperature will generally:
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As compared to a naturally aspirated engine, a properly balanced and fueled turbocharged engine may realize increase power output as high as:
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Turbo-chargers can be considered an exhaust driven, centrifugal air pump.
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On a turbocharger, the expanding hot engine exhaust will act on and directly drive the compressor wheel.
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Much of the heat absorbed by the turbine housing and the turbine wheel and shaft assm. will be transferred to the oil passing through the turbo-charger.
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The turbine wheel, shaft and compressor wheel operate as a balanced assembly.
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Which of these turbo-charger components must be marked for balance or alignment before disassembly:
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An EGR equipped engine will divert _________ to help control emissions.
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A turbo waste gate ___________ to prevent over pressure.
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Measuring the turbo boost of an engine will give a good indication on how well an engine is performing.
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A turbocharger with too much radial movement may cause:
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The ______________ is used in turbochargers to prevent excessive turbo boost pressures.
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What is the best method to test boost pressures on a diesel engine?
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Air Induction Exhaust Turbo
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