gvpm powertrain overview john tasdemir · 2011-10-11 · ground vehicle power and mobility (gvpm)...
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GVPM Powertrain OverviewJohn Tasdemir
UNCLASSIFIED: Dist A. Approved for public release
11 Aug 2011
UNCLASSIFIED: Dist A. Approved for public release
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1. REPORT DATE 10 AUG 2011
2. REPORT TYPE Briefing
3. DATES COVERED 10-08-2011 to 10-08-2011
4. TITLE AND SUBTITLE Ground Vehicle Power and Mobility (GVPM) Powertrain Overview
5a. CONTRACT NUMBER
5b. GRANT NUMBER
5c. PROGRAM ELEMENT NUMBER
6. AUTHOR(S) John Tasdemir
5d. PROJECT NUMBER
5e. TASK NUMBER
5f. WORK UNIT NUMBER
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army TARDEC ,6501 E.11 Mile Rd,Warren,MI,48397-5000
8. PERFORMING ORGANIZATIONREPORT NUMBER #22026
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) U.S. Army TARDEC, 6501 E.11 Mile Rd, Warren, MI, 48397-5000
10. SPONSOR/MONITOR’S ACRONYM(S)
11. SPONSOR/MONITOR’S REPORT NUMBER(S) #22026
12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release; distribution unlimited
13. SUPPLEMENTARY NOTES
14. ABSTRACT NA
15. SUBJECT TERMS
16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT Same as
Report (SAR)
18. NUMBEROF PAGES
5
19a. NAME OFRESPONSIBLE PERSON
a. REPORT unclassified
b. ABSTRACT unclassified
c. THIS PAGE unclassified
Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18
Challenges we have: • Commercial Off-The Shelf (COTS) engines are not optimized for military applications• Emissions compatible engines are not compatible with military grade fuels (JP-8, JP-5, DF-2, etc…) • Availability of power dense and low heat rejecting engines for combat vehicles• Controls algorithms unique for military platforms targeting global fuel compatibility and fuel efficiency• Limited transmission technologies specific for the extreme demands and conditions of military vehicles
Solutions we are investigating:
Where we need your help:• Military fuel compatibility, fuel efficiency, electrical power generation, high efficiency low thermal burden cooling.• High power density low heat rejection engine designs, higher temp/low friction materials, improved cooling, efficient accessory
drives, advanced controls algorithms.• Improved torque capacity, better speed/load matching, reduced thermal loading, and improved control strategy for automatic
transmission applications.
Powertrain
UNCLASSIFIED: Dist A. Approved for public release
COTS Engine Optimization for JP8 Fuels• 48% Thermal Efficiency
• 0.6 kW/kW Heat Rejection
Efficient Powertrain Technologies• Combat Tracked Vehicles• Tactical Wheeled Vehicles
Research on the Ignition and Combustion Variances of JP-8 Fuel
• Fuel Characterizations • Controls Algorithims
Ultra High Pressure JP-8 Fuel Injection R&D
• Improve engine efficiency• Injector durability on low
lubricity fuels
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Powertrain ProjectsCurrent & Future
Propulsion Technology
Current & Future
Combat Vehicle
Current & Future
Tactical Vehicle
Militarizing Commercial Diesel Engines and Transmissions for Tactical Vehicles:
Common Technology Development for Military Vehicles:
High Output Combat Vehicle Powertrain Development:
• Efficient, Integrated power pack• Increased Power Density• Quiet, efficient on-board electrical
power generation• Improved Fuel Efficiency• Thermoelectric Waste Heat Recovery
• Advanced Engine Cycle Demo• Increased Power Density• Enable Lighter Weight Structures• Decreased Heat Rejection• Efficient Binary-Logic Transmission• Quiet, efficient on-board electrical
power generation• Engine controls adapt engine for
variations in heavy fuels• Efficient, Integrated power pack
• Diesel Cold-start Research• Common military vehicle drive cycle
for fuel economy measurement• High Efficiency Power transfer
devices for military vehicle transmissions• Cabin Thermal Management• Militarized Power train Control Module
and strategies devices for militaryvehicle transmissions
FY11 FY12 FY13 FY14 FY15 FY16 FY17 FY18 FY19 FY20 FY21
Efficient Powertrain Technologies(Engine , Inline Generator, Transmission):- Medium Combat Application (20-40 tons)- Medium Tactical Application (15-30 tons)
Thermoelectric Waste Heat RecoveryEnergy Analysis
Next Generation Combat Engine Next Generation Combat Engine
High Operating Temperature High Engine Density (HOTHED)
Next Generation Combat Vehicle Engines and Transmissions
Independent Laboratory In house Research (ILIR) Combustion and JP-8 Research
Ultra High Capacity Launch Clutch for Tactical Transmission
Multi K Factor Torque converter
Powertrain Control and ECM Hardware Development
Military Vehicle Fuel Economy Measurement Cycle Development
CommonTechnology
Efficient Powertrain Integration(Engine , Inline Generator,Transmission):- Medium Combat Application- Medium Tactical Application
Thermoelectric Waste Heat Recovery
Energy Analysis
Cabin Thermal Management
UNCLASSIFIED
Laboratory CapabilityCurrent & Future
Propulsion Laboratory
GSPELGround Systems Power and Energy Laboratories
PowertrainRoadmap
Current Capability
P&E Vehicle Environmental Laboratory
9 Test Cells which include:• 6 “engine” test cells used for performance, endurance,
transmission or drive train testing• 2 vehicle test cells designed for steady-state tests to 44,000 ft-lbs
per side as well as transient tests and a Power & Inertia Simulator (PAISI)
• 1 vehicle test cell designed for wind speeds up to 20mph in eight possible directions, two 2500 hp dynamometers, 160F ambient temps
New Vehicle Environmental Lab:• 12 AC Dynamometers (2 for BFVS class combat vehicle and 10
for all tactical/wheeled vehicle torque/speed ratings)• Environmental capability from -60F to +160F with variable
wind, solar (desert) and humidity (global) control• Transient cycle (mission profile) test capability for repeatable /
controlled condition performance characterization, field failure root cause analysis and modeling and simulation validation data
Future Capability
UNCLASSIFIED
Advanced PowertrainTechnologies
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1975 1980 1985 1990 1995 1999 2001 2004 2007 2010
Year
Bra
ke S
peci
fic F
uel C
onsu
mpt
ion
(lbm
/hp-
hr)
1998 EPA Military Emissions Waiver
2004 EPA
2007 EPA
2010 EPA
Projected DevelopmentMilitary Engine Optimization
EfficiencyGap Transmission
-No Torque Converter- Multi-Cone clutches- Wide-spread, equallyprogressive gear ratios
- Low parasitic oil mgmt.- Variator technologies - Integrated controls-- Cooling system
Generator- Hardware- Controls
Engine- Multiple fuels- Integrated
Controls- Noise abatement- Cooling system
Commercial Heavy Duty Engine Manufacturers have Diverged from Military Engine Demands
Powertrain Integration and Optimization> 6 hp/ft3
High Engine Power Density
0
50
100
150
200
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400
450
500
0 1000 2000 3000 4000 5000 6000 7000 8000
BM
EP (P
SI) Cat 3600
Cat C-15
Heavy Duty, CommercialCat C-7
Navistar
GM Duramax
Pick-up Trucks
VW BMW
Euro Pass. Cars
Kawasaki, Army MotorcycleAVL, UAV
Cat C6C
MTU
HP/Liter of Displ. = BMEP X RPM / 12,984
RPM
100 hp/liter
150 hp/liter
200 hp/liter
FCS Combat EngineHigh
Speed Combustion
OPOC UAV
OPOC
Next Generation Combat Engine Binary Logic
Transmissions> 90% η
UNCLASSIFIED