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