17 Questions
What is the main subject of ME 3213 at Romblon State University?
Combustion Engineering
Who is the individual responsible for preparing the course ME 3213 at Romblon State University?
Engr. Bliven U. Garcia
Which campus hosts the Main Campus of Romblon State University?
Odiongan
What is the program under which ME 3213 is offered?
Mechanical Engineering
What professional designation does Engr. Bliven U. Garcia hold?
ASEAN Eng.
The subject ME 3213 focuses on which engineering discipline?
Combustion Engineering
Which of the following is NOT part of the program under which ME 3213 is offered?
Thermodynamic Cycles
What is the process called when the piston pushes upward to purge exhaust gases from the cylinder?
Exhaust stroke
In the four-stroke cycle, what happens when the intake valve opens?
Fresh air-fuel mixture enters the cylinder
Which type of process is assumed for the compression stroke in the ideal auto-cycle?
Isentropic
What kind of heat addition occurs between stroke 1 and 2 in the ideal auto-cycle?
Isochoric
What type of process is described when the combustion products rush out after stroke 2 in the ideal auto-cycle?
Isochoric heat rejection
What is the name of the thermodynamic cycle used in a gasoline engine?
Otto cycle
What initiates the ignition of the air-fuel mixture in the Otto cycle?
Compression of the mixture
During which stroke of the piston does the expansion or power stroke occur in the Otto cycle?
Power stroke
What is the purpose of the exhaust valve opening right before the piston reaches its initial position?
To release the exhaust gases
Who is credited with building a working engine using the Otto cycle in Germany in 1876?
Nicolaus Otto
Study Notes
Combustion Engineering
- The subject ME 3213 is about Combustion Engineering, which is part of the Mechanical Engineering program at Romblon State University.
The Ideal Cycle
- The ideal cycle is a simplified model of the combustion process, assuming ideal conditions and ignoring some complexities.
- It takes into account only the first two strokes and assumes the gases are air only, with heat being added and removed from external sources.
The Four Strokes of an Engine
- The four strokes of an engine are:
- Intake stroke: piston moves down, pulling in air-fuel mixture
- Compression stroke: piston moves up, compressing the mixture
- Power stroke: spark plug ignites the mixture, pushing piston down
- Exhaust stroke: piston moves up, pushing out exhaust gases
The Otto Cycle
- The Otto cycle is the ideal cycle for internal combustion engines, using gasoline and a spark igniter to generate thermal energy.
- It consists of four strokes: intake, compression, power, and exhaust.
- The Otto cycle is a thermodynamic cycle that generates motion from thermal energy.
Processes in the Otto Cycle
- Isentropic compression: first stroke, from state 1 to 2
- Isochoric heat addition: between strokes 1 and 2, at constant volume
- Isentropic expansion: second stroke, from state 3 to 4
- Isochoric heat rejection: between strokes 2 and 3, at constant volume
Test your knowledge on Combustion Engineering with this quiz prepared by Engr.Bliven U.Garcia from Romblon State University. The quiz covers topics related to combustion processes, principles, and applications in mechanical engineering.
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