20 Questions
How many strokes are required for the four-stroke cycle engine to produce one power stroke?
Four
During which stroke does the piston move upward, compressing the mixture in the combustion chamber?
Compression Stroke
What is the purpose of the intake stroke in the four-stroke cycle engine?
To draw a mixture of gasoline and air into the cylinder
What opens the inlet and exhaust valves in a four-stroke cycle engine?
Camshafts
Which type of internal combustion engines include two-stroke and four-stroke cycles?
Spark ignition engines
Which type of engine was developed before the two-stroke engine?
Four-stroke cycle engine
In the four-stroke cycle engine, which stroke is responsible for generating useful power?
Power Stroke
What function do the piston rings serve in a four-stroke engine?
To limit the amount of oil entering the combustion chamber
How is the lubrication of a two-stroke engine different from that of a four-stroke engine?
Four-stroke engines are lubricated by mixing oil with gasoline
What distinguishes a two-stroke engine from a four-stroke engine in terms of power output?
Two-stroke engines produce more power at low speeds
What is a notable difference in the working cycle of a two-stroke engine compared to a four-stroke engine?
Two-stroke engines produce a power stroke for every crankshaft revolution
What is the main difference in the method of intake between two-stroke and four-stroke engines?
Four-stroke engines draw in air and fuel through ports uncovered by the piston
What is a disadvantage of the four-stroke engine compared to a two-stroke engine?
It is more mechanically complex
How does the two-stroke engine lubricate its parts?
By mixing a special lubricating oil with the gasoline in the tank
Which part of the engine assists in pushing the exhaust gases through the exhaust port in a two-stroke engine?
Piston
Why does the two-stroke engine not produce twice as much power as a four-stroke engine of the same size and speed?
It is less efficient at exhaust gas scavenging
What is a notable characteristic of the two-stroke cycle engine?
Functions by utilizing three openings in its cylinder wall
Which statement describes the impact of the piston movement in a two-stroke engine?
The upward movement of the piston uncovers exhaust port E, which releases cylinder pressure and discharges most of the burned gases
What is the function of spark plug G in the two-stroke cycle engine?
To ignite the compressed mixture near the upper end of the stroke
What is a distinguishing feature of the four-stroke engine?
'Produces good fuel economy and high torque at low speeds'
Learn about the different working cycles for internal combustion engines, including two-stroke and four-stroke cycles for both spark ignition and compression ignition engines. Explore the development and operation of four-stroke spark ignition engines.
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