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WorksheetsFundamentals of Engine Design
Total questions: 18
Worksheet time: 9mins
What are the ideal conditions for combustion?
Fuel
Oxygen
CO2
Water
Energy
What is the difference between Diesel and Gasoline engines?
Compression Ignition
Spark Ignition
Both A and B
None of the above
What are the main emissions from combustion?
CO
HC
NOx
All of the above
What is the role of Exhaust Gas Recirculation (EGR)?
Increase engine efficiency
Limit raw NOx emissions
Reduce soot formation
All of the above
What is the function of a Diesel Particulate Filter (DPF)?
Physically trap particulates
Oxidises HC and CO
Simultaneously convert HC, CO and NOx
None of the above
What are the two types of pressure chargers?
Turbocharger
Supercharger
Both A and B
None of the above
What is the significance of variable valve timing (VVT)?
Improves emissions
Enhances drivability
Key enabler of Atkinson / Miller cycle
All of the above
What are the different injection configurations?
Port Fuel Injection
Gasoline Direct Injection
Diesel direct injection
All of the above
What are the critical factors for Diesel direct injection?
Emissions
Combustion stability
Drivability
NVH
What does gasoline PFI help achieve?
Low emission level
High power output
Increased fuel consumption
Reduced engine noise
What does engine configuration describe?
Number of cylinders
Arrangement of cylinders
Total displacement of all cylinders
All of the above
What are the components of a power cell?
Piston rings
Piston
Liner
All of the above
What is the function of the piston ring?
Scrapes surplus oil
Rides on film of oil
Presents lower edge to cylinder wall
All of the above
What changes have been made in piston design to reduce emissions?
Raised top ring
Reduced crownland clearance
Both A and B
None of the above
What is necessary to convert the piston reciprocating motion into continuous rotation?
Combination of conrod and crankshaft
Only crankshaft
Only conrod
None of the above
What can cause dramatic engine failure without the use of an engine control system?
LSPI events
Turbocharger failure
Oil pump malfunction
Fuel pump failure
What does low friction base technology include?
Low viscosity oils
Advanced surface coatings
Steel pistons with low friction rings
All of the above
What is the pressure that the system can handle?
Up to 1000 bar
Up to 2000 bar
Up to 3000 bar
Up to 4000 bar
