Internal Combustion Engine
 
 
Subject Code: EME4096
Aim of Subject: It provides students with main concepts of the internal combustion engine and, improves the students’ ability to comprehend new development in the field.
Learning Outcome of Subject: At the completion of the subject, students should be able to :
  • Analyse effects of operating parameters of engines on engine efficiency, brake power and volumetric efficiency. (Cognitive - analysing, level 4)
  • Confirm that two-stroke engine should be banned due to the high pollution. (Cognitive - understanding, level 2)
  • Build a basic mathematical model to simulate the engine parameters. (Cognitive - applying, level 3)
  • Evaluate the main parameters on carburettor and injector. (Cognitive - applying, level 3)
  • Investigate the effect of air fuel ratio on emission and engine power. (Cognitive - applying, level 3)
Programme Outcomes:
  • Ability to acquire and apply fundamental principles of science and engineering(50%)
  • Capability to communicate effectively(10%)
  • Acquisition of technical competence in specialised areas of engineering discipline(10%)
  • Ability to identify, formulate and model problems and find engineering solutions based on a systems approach(10%)
  • Ability to conduct investigation and research on engineering problems in a chosen field of study(10%)
  • Ability to work effectively as an individual, and as a member/leader in a team(10%)
Assessment Scheme:
  • Lab Experiments - work in group of 2, lab report writing, oral assessment at the end of lab (10%)
  • Tutorial / Assignment - group/individual assignment,focus group discussion at tutorial,to enhance understanding of basic concepts in lecture(10%)
  • Test Quiz - written exam (20%)
  • Final Exam - written exam (60%)
Teaching and Learning Activities: This subject will be delivered using the following means:
  • Lecture Hours = 42 hours
  • Supervised Tutorial Hours = 6
  • Laboratory Experiments = 6
  • Total Contact Hours = 54
Credit Hours: 3
Pre-Requisite: None
References:
  • Willard W. Pulkrabek, “Engineering fundamentals of the internal combustion engine”, 2nd addition, Prentice hall, 2004. (Textbook)
  • John B. Heywood, “Internal combustion engine fundamentals”, McGraw-Hill, 1988.

Subject Contents

  • Introduction (4Hours)
    Early history, engine classification, terminology and abbreviations, engine components and basic engine.

  • Operating Characteristics (12 Hours)
    Engine parameters, work, mean effective pressure, torque and power, air fuel ratio and fuel-air ration, specific fuel consumption, engine efficiency, volumetric efficiency.

  • Engine Cycles (12 Hours)
    Air-standard cycles, Otto cycle, real air-fuel cycle, SI engine cycle at part throttle, exhaust process, diesel cycle, dual cycle, comparison between SI and DI, two-stroke cycle and Stirling cycle.

  • Thermochemistry and Fuel (6 Hours)
    Thermochemistry, hydrocarbon fuels---gasoline, some common hydrocarbon components, self-Ignition and octane number, diesel fuel and alternate fuel.

  • Combustion (4 Hours)
    Combustion in SI engine, combustion in divided chamber engine, engine operating characteristics, modern fast combustion chamber, and combustion in CI engines.

  • Air Fuel Induction (4 Hours)
    Intake manifold, volumetric efficiency of SI engine, intake valves, fuel injection, carburetor, supercharging and turbocharging, intake for CI engines.

Laboratory Experiments

1. Otto Cycle Model
2. Test Engine Bed (Single Cylinder 4-Stroke CI)