design optimization and verification of compact diesel ...€¦ · engine operating environment 0 1...
TRANSCRIPT
Defiance Technologies Limited A Hinduja Group Company
Design optimization and verification of
Compact Diesel Engine Systems –Air
Intake and Cooling system
Bharathan S
Cooling System Engineer
Powertrain- Defiance
Prashanth B
Air System Engineer
Powertrain-Defiance
Automotive diesel engines - Subsystems
2
Automotive diesel engines - Subsystems
3
Objective & Result
Objective
To have a complete understanding of the system fundamentals
To develop competency in system modelling
To verify and optimize system architecture
To develop a complete engine 1D model
Result
Indigenously developed system1D model
Scalable and is customized
Low cost and reliable model
4
Engine operating environment
0
1
2
3
4
5
Volumetric efficiency
Engine warm up time
P, T, m of intake air
Coolant temperature
Sensitivity
Key metrics
5
Modelling approach
Level – 1
Periodic (Event based)
Level – 2
Continuous (Time based)
Why Matlab?
Adaptation is easier
Customization
Modularity
Competency
Scalability
6
System interaction
System layout & Parameter diagram
Air intake system Model
8
Air intake outputs discussion
9
Test data
Predicted
DOE & Optimization
2 Valves vs. 4 Valves
Valve lift profiles
Con-rod length and piston travel
Valve seat angle
Robust air intake system
Higher volumetric
efficiency
Lesser variation with
respect to operating
conditions
Cooling system Model
Water Pump Engine overheat indicator
Cooling system - Results
Temperature vs. Time Flow vs. Time
DOE & Optimization
Thermostat characteristics
Water pump characteristics
Coolant flow ratio
Optimized coolant flow and heat rejection characteristics
Better thermal efficiency
16-Jun-14 Defiance Confidential 12
Summary
Cost reduction
Design optimization
Reduced time
Variation reduction
Robust
Easy decision making
www.defiance-tech.com
DISCUSSIONS
www.defiance-tech.com
THANK YOU