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2201 Test 1
| Question | Answer |
|---|---|
| Cylinders of an in-line engine are arranged in a _____ row parallel to the crankshaft | Single |
| In a in-line engine there are generally an _____ number of cylinders | Odd |
| The number of cylinders in a single row radial engine usually ranges from ____ to ____ | 5 to 9 |
| A double row radial engine resembles two single row radial engines combined on a single ______ | crankshaft |
| The usual number of cylinders in a double row radial engine is either ____ or _____ | 14 or 18 |
| The radial engine has a disadvantage of greater _____ | drag |
| The largest most powerful piston-type engine built and used in the United States is ______ | muti-row radial |
| The most popular engine for use in light conventional aircraft and helicopters is the _____ | opposed type engine |
| The opposed type engine is usually mounted with the cylinders | horizontal |
| What are the four different types of cylinder arrangements | In-line- V-type, opposed, and radial |
| Engine L | Left hand rotation |
| Engine T | Turbocharged |
| Engine V | Vertical |
| Engine H | Horizontal |
| Engine R | Radial |
| Engine O | Opposed |
| Engine G | Geared Nose |
| Engine S | Supercharged |
| Engine A | Aerobatic |
| Engine I | Fuel injected |
| In an in-line engine cylinder arrangement is | arranged in a single row parallel to the crankshaft |
| A single row radial engine has | odd number of cylinders extending radially from the crankshaft |
| Houses and encloses the various mechanisms surrounding the crankshaft | crankcase |
| Most aircraft engine crankcases are made of ______ | aluminum alloys |
| What are the four sections of a typical radial engine crankcase? | Nose, power distribution, fuel induction and accessory |
| Any surface that supports or is supported by another surface is called a _______ | bearing |
| Bearings which are designed primarily to take thrust loads are called _____ bearings | thrust |
| What are the three general types of bearings | plain, ball and roller |
| Component that transforms reciprocating motion of the piston and connecting rod into rotary motion for turning the propeller | crankshaft |
| Principle parts of the crankshaft are | main journal, crank pin, crank cheek and counterweight |
| The purpose of the counterweight is to provide ______ for a crankshaft | static balance |
| The purpose of ________ is to relieve the whip and vibration caused by the rotation of the crankshaft | dynamic dampers |
| Three types of propeller mounting shafts | taper, spline, flange |
| The link that transmits forces between the piston and the crankshaft is the | connecting rod |
| Connecting rod furnishes the means of converting the _____ motion of the piston to a ____ movement | reciprocating and rotating |
| The master and articulating connecting rod assembly is used primarily for _____ engines | radial |
| The ____ is a plunger that moves back and forth or up and down within an engine cylinder barrel | piston |
| Grooves are machined around the outer surface of the piston to provide support for the ______ | piston rings |
| What are the 5 types of piston heads | flat, recessed, concave, convex truncated cone |
| The purpose of _____ rings is to prevent gases from escaping past the piston during engine operation | compression |
| the purpose of the _______ ring is to control the thickness of the oil film on the cylinder wall | oil control |
| A ____ pin, sometimes called a ____ pin, is used to attach the piston to the connecting rod | piston, wrist |
| Converts the chemical heat energy of the fuel to mechanical energy | cylinder |
| the process where the nitrogen from anhydrous ammonia gas is forced to penetrate a steel surface is called | nitriding |
| Cylinders which are bored with a slight taper are said to be | chokebored |
| The main purpose of _____ an internal-combustion engine is to open and close ports, which are opening into the combustion chamber | valves |
| The ____ are positioned to support and guide the stems of the valves | valve guides |
| A device for actuating the valve lifting mechanism is called a | Cam |
| A steel or aluminum alloy rod or tube between the valve lifter and the rocker arm | pushrod |
| The cold clearance of the valves in an engine is usually much ____ that the "hot" clearance | less |
| The section of an engine which provides mounting pads for fuel pressure pumps, fuel injector pumps, vacuum pumps ect. | accessory section |
| Is the most common type of thrust bearing used is radial engines | deep groove ball |
| Cam-ground pistons are installed in some aircraft engines to ____ | provide better fit operating temps. |
| Choke-bored cylinders are used because they ______ | provide a straight cylinder bore at operating temps. |
| The purpose of two or more valve springs in an aircraft engine is to | eliminate valve spring surge |
| Full floating piston pins are those which allow motion between the pin and ____ | both the piston and the small end of the connecting rod |
| The inside of some cylinder barrels are hardened by _____ | nitriding |
| Excessive valve clearance causes the valves to ____ | open late and close early |
| An advantage of using metallic sodium-filled exhaust valves in aircraft reciprocating engines is ____ | reduce valve operating temps. |
| The source of most of the heat that is absorbed by the lubricating oil in reciprocating engines is the ____ | pistons and cylinder walls |
| The way in which the oil collected by the piston ring is returned to the crankcase is ____ | through holes drilled into the piston oil ring groove |
Created by:
Tiana Arch