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Questions and Answers
What is the main subject of ME 3213 at Romblon State University?
What is the main subject of ME 3213 at Romblon State University?
- Thermodynamic Cycles
- Combustion Engineering (correct)
- Mechanical Engineering
- Program Engineering
Who is the individual responsible for preparing the course ME 3213 at Romblon State University?
Who is the individual responsible for preparing the course ME 3213 at Romblon State University?
- ASEAN Eng. Odiongan
- Engr. Mechanical Bliven
- Engr. Romblon Garcia
- Engr. Bliven U. Garcia (correct)
Which campus hosts the Main Campus of Romblon State University?
Which campus hosts the Main Campus of Romblon State University?
- Asean Eng.
- Romblon
- Odiongan (correct)
- Combustion Engineering
What is the program under which ME 3213 is offered?
What is the program under which ME 3213 is offered?
What professional designation does Engr. Bliven U. Garcia hold?
What professional designation does Engr. Bliven U. Garcia hold?
The subject ME 3213 focuses on which engineering discipline?
The subject ME 3213 focuses on which engineering discipline?
Which of the following is NOT part of the program under which ME 3213 is offered?
Which of the following is NOT part of the program under which ME 3213 is offered?
What is the process called when the piston pushes upward to purge exhaust gases from the cylinder?
What is the process called when the piston pushes upward to purge exhaust gases from the cylinder?
In the four-stroke cycle, what happens when the intake valve opens?
In the four-stroke cycle, what happens when the intake valve opens?
Which type of process is assumed for the compression stroke in the ideal auto-cycle?
Which type of process is assumed for the compression stroke in the ideal auto-cycle?
What kind of heat addition occurs between stroke 1 and 2 in the ideal auto-cycle?
What kind of heat addition occurs between stroke 1 and 2 in the ideal auto-cycle?
What type of process is described when the combustion products rush out after stroke 2 in the ideal auto-cycle?
What type of process is described when the combustion products rush out after stroke 2 in the ideal auto-cycle?
What is the name of the thermodynamic cycle used in a gasoline engine?
What is the name of the thermodynamic cycle used in a gasoline engine?
What initiates the ignition of the air-fuel mixture in the Otto cycle?
What initiates the ignition of the air-fuel mixture in the Otto cycle?
During which stroke of the piston does the expansion or power stroke occur in the Otto cycle?
During which stroke of the piston does the expansion or power stroke occur in the Otto cycle?
What is the purpose of the exhaust valve opening right before the piston reaches its initial position?
What is the purpose of the exhaust valve opening right before the piston reaches its initial position?
Who is credited with building a working engine using the Otto cycle in Germany in 1876?
Who is credited with building a working engine using the Otto cycle in Germany in 1876?
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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
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