& Mobility Stryker Vehicle Advanced Propulsion with Onboard - - PowerPoint PPT Presentation

Power & Mobility

8/21/2018

Stryker Vehicle Advanced Propulsion with Onboard Power (APOP)

Kevin Boice Josh Tylenda Youssef Abdallah

Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Power & Mobility

8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

What was the APOP project?

• High power upgrade to the Stryker vehicle, 8X increase
• 120kW, 600VDC Inline Generator (DRS)
• 2 x 10kW 600V-28V DC-DC converter (BAE)
• 35kW Main Cooling Fan (Marvin Land Systems)
• 12kW Electric Hydraulic Pump (Parker)
• J1772 Export Power Connection (REMA)

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Vehicle Power Architecture

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Vehicle Testing

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Outer Performance Curve

50 100 150 200 250 10 20 30 40 50 60 70

Road Load Power (hp) Speed (MPH)

Outer Performance Curve

Baseline APOP Pre-Test APOP Post-Test

Dynamometer Speed (mph) %hp Change Baseline to APOP Pre-test %hp Change APOP Pre-Test to Post-Test 60 5.1%

• 1.6%

50 6.4%

• 1.2%

40 2.1%

• 8.4%

30

• 0.9%
• 1.1%

20 4.6%

• 1.0%

Purpose: Measure max road load horsepower available at a given speed

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Full Load Cooling

500 1000 1500 2000 2500 3000 3500 4000 2 4 6 8 10 12 14 16 18

Force (lbf) Speed (MPH)

Full Load Cooling

Baseline APOP APOP (Fan tune) APOP (add 25kW)

Purpose: Measure max tractive force at low speed Note: Due to test setup limitations, this test was done in 4th gear with transmission unlocked

Low, 0.50 TE/WT Med, 0.57 TE/WT High, 0.62 TE/WT

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Speed on grade

• 0.20

0.40 0.60 0.80 1.00 1.20 1.40 1.60 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 5 10 5 10 2 2 2 2 2 5 5 5 5 5 10 10 10 15 15 20 20

Fuel usage (gal/hr)/hp

APOP Vehicle Baseline Vehicle

Grade % Speed(MPH)

Purpose: Measure fuel usage and max speed for a grade

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Acceleration

20 40 60 80 100 120 140 160 180 1 2 3 4 5 6 7 8 9 10

Time (s) Run Number

Acceleration Time (0-60MPH)

Baseline APOP APOP w/ shedding

Load shedding DC-DC converters

Purpose: Measure 0-60MPH acceleration time

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Cruising Range

Fuel Rate L/Hr Vehicle Speed MPH Average Fuel Economy MPG Traveled Distance Miles Total Fuel Consumption Gallons Base 29.45 40.85 5.25 330 62.86 APOP 29.55 40.23 5.15354 330 64.03

Purpose: Vehicle range is specified at 40MPH

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High Idle High Electrical Load

y = 0.2281x + 15.568 y = 0.2153x + 12.168 5 10 15 20 25 30 35 10 20 30 40 50 60 70 80 90

Fuel Usage (L/h) Power (kW)

Fuel Usage During Export Power

HV Export Total HV Load Linear (HV Export) Linear (Total HV Load)

Purpose: Measure fuel usage for an export power use case

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Screening Testing

• 900
• 800
• 700
• 600
• 500
• 400
• 300
• 200
• 100

100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Road Load Force (lbf) Test Run

APOP vs Baseline Road Force Difference

2 4 6 8 10 12 6-8.9 9-11.9 12-14.9 15-17.9

Test Run Count Fuel Usage Range (gal/hr)

Fuel Usage Summary

Baseline APOP

Purpose: Measure performance and fuel usage as future loads added 20 test points of varying road load, speed, and electrical load. APOP Test adds 11, 34 and 59 kW of high voltage load depending on point.

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

Conclusions

• Generally performed as good or better than baseline at an

equivalent vehicle load

• Challenges still exist as future loads are added to the system
• Opportunities exist for further optimization and load

shedding

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8/21/2018 Unclassified / DISTRIBUTION A. Approved for public release: distribution unlimited

The End?