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Engine Tools
Measuring Tools
Engine efficiency
Engine Operating Principles
100

Engine that uses compression ignition

What is a diesel engine?

100
used to support the weight of an engine to make overhaul easier.
What is an Engine stand
100
Provides an accurate reference for measuring warpage of machined surfaces.
What is a Precission Straight edge.
100

Engine that does not use superchargers or turbochargers for air intake.

What is naturally aspirated

100
Location of the piston at its lowest point of travel.
What is botom dead center
200

The amount of time where both the intake and exhaust valves are open

What is valve overlap

200
tool used to test valve spring operating tension.
What is Valve spring tester
200
Measures clearance between 2 surfaces
What is a feeler gauge.
200
Using an exhaust driven compressor unit to force air into the cylinders, has no direct mechanical connection to the engine
What is Turbocharged
200

Distance the piston travels from TDC to BDC, or from BDC to TDC

What is the stroke
300

An engine that has separate camshafts for the intake and the exhaust valves

What is a dual over-head cam (DOHC) engine

300
used to remove gears using torque or hydraulic pressure.
What is a Gear Puller
300
Measures outer diameters and thickness, read on a graduated scale
What is a micrometer
300

Forcing air into the cylinders above atmospheric pressure; usually applies to devices that have a direct mechanical connection.

What is Supercharged

300
Sequence in which the cylinders deliver their power strokes, begins with number one cylinder
What is Firing order
400

Engines that have a larger stroke than bore

What is undersquare

400
Aids installation of piston and ring assembly into the cylinder bore or liner.
What is a ring compressor
400
Measures back and forth movement of a component
What is a dial indicator
400

The engine’s ability to fill its cylinders with the air/fuel mixture on the intake stroke

What is volumetric efficiency

400

A comparison of cylinder volume between BDC and TDC

What is compression ratio

500

The distance from the crankshaft’s main bearing centreline to the crankshaft connecting rod journal

What is the crank throw

500
Compresses the valve spring allowing the removal or installation of the valve spring keepers.
What is a valve spring compressor
500

Measures distance between an upper and lower surface.

What is a depth gauge.

500

A measure of how much of the heat formed during the combustion process is available as power from the engine

What is thermal efficiency

500

A four-stroke cycle engine in which the intake valve is held open longer than normal during the compression stroke

What is an Atkinson Cycle Engine

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