Exam (elaborations)
A1 Engine Repair Questions with Explanations of Answers | latest upate 2024
- Module
- 2024- 2025 prep test
- Institution
- 2024- 2025 Prep Test
A1 Engine Repair Questions with Explanations of Answers | latest upate 2024
[Show more]
Content preview
A1 Engine RepairAbrasion - ANS -rubbing away or wearing of a part
Abrasive Cleaning - ANS -cleaning that requires physical abrasion (glass bead
blasting, wire brushing)
Acidity - ANS -in lubrication, the presence of acid-type chemicals, which are
identified by the acid number
Additive - ANS -material added to the engine oil to give it certain properties
Adhesion - ANS -an oil's ability to cling to a surface
Aeration - ANS -the process of mixing air with liquid
Aerobic - ANS -curing when exposed to oxygen
Air Duct - ANS -a tube, channel or other tubular structure used to carry air to a
specific location
Air Gap - ANS -space or gap between spark plug electrodes, motor and generator
armatures and field shoes
Align Boring - ANS -a machining method that realigns bearing bores to center
and makes the bores round
Alignment - ANS -an adjustment to bring into a line
Alloy - ANS -a mixture of different metals
Aluminum - ANS -a lightweight metal used often for cylinder heads and other
parts
Ambient Temperature - ANS -the temperature of the air surrounding an object
Ammeter - ANS -instrument used to measure electrical current flow in a circuit
Ampere (amp) - ANS -unit for measuring electrical current
,Anaerobic - ANS -curing in the absence of oxygen
Antifreeze - ANS -a material such as ethylene glycol which is added to water to
lower its freezing point (used in an automobile's cooling system)
Atmospheric Pressure - ANS -the weight of the air at sea level or at higher
altitudes
Axial - ANS -having the same direction or being parallel to the axis of rotation
Axial Load - ANS -a type of lad placed on a bearing that is parallel to the axis of
the rotating shaft
Axial Play - ANS -movement parallel to the axis of rotation
Babbitt - ANS -a soft bearing alloy used in engine bearings
Backlash - ANS -the clearance or play between two parts, as in gear mesh
Backpressure - ANS -pressure created by restriction in an exhaust system
Balance Shaft - ANS -weighted shaft used on some engines to reduce vibration
Ball Bearing - ANS -an anti-friction bearing that uses a series of steel balls held
between inner and outer bearing races
Barometric Pressure - ANS -the pressure of the atmosphere, usually expressed
in terms of the height of a column of mercury
Base Circle - ANS -the part of a camshaft lobe that is opposite the tip of the nose
and does not move the valve in any way
Battery - ANS -a device that produces electricity through electrochemical action
Battery Acid - ANS -the sulfuric acid solution used as the electrolyte in a battery
Battery Cell - ANS -the part of a storage battery made from two dissimilar metals
and an acid solution
, Bearing - ANS -part that supports and reduces friction between a stationary and
moving part or two moving parts
Bearing Cap - ANS -the removable, lower half of the bearing saddle
Bearing Clearance - ANS -the space between a bearing and its corresponding
components loaded surface
Bearing Crush - ANS -the bearing is slightly larger at its parting lines so that
when the two halves of the bearing are tightened together, the bearing seats
firmly in its bore
Bearing Lining - ANS -the bearing surface area of a bearing, it is usually made up
of an alloy of several metals, including lead
Bearing Race - ANS -machined circular surface of a bearing against which the
roller or ball bearings ride
Bearing Spread - ANS -the condition in which the distance across the outside
paring edges of the bearing insert is slightly greater than the diameter of the
housing bore
Before Top Dead Center - ANS -the degrees of crankshaft rotation just before the
piston in a specific cylinder reaches TDC, the highest point in its vertical travel on
the compression stroke.
Big End - ANS -the large end of the connecting rod that connects to the
crankshaft
Blowby - ANS -the unburned fuel and prodects of combustion that leak past the
piston rings and into the crankcase at the last part of the combustion stroke
Bolt Diameter - ANS -measurement across the major diameter of a bolts threaded
area or the bolt shank
Bolt Head - ANS -part of the bolt that the socket or wrench fits over in order to
torque or tighten the bolt
Boost Pressure - ANS -term used when a turbocharger increases the air pressure
entering an engine above atmospheric pressure
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ACTUALSTUDY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79650 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now