2014 Chevrolet Spark & Spark EV - steel.org/media/Files/Autosteel/Great Designs in... · Spark EV...
Transcript of 2014 Chevrolet Spark & Spark EV - steel.org/media/Files/Autosteel/Great Designs in... · Spark EV...
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2014 Chevrolet Spark & Spark EV
Ickhee Han Body Engineering
GM Korea
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Vehicle Introduction of Spark, Spark EV
Do you remember the name of the Autobot
in the movie “Transformers?”
“Skids”
He is the “Chevrolet Spark!”
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Spark
- City car (A-segment super-mini)
- 5 door hatchback
- Wheelbase 2,370 mm
Length 3,720 mm
Width 1,630 mm
Curb Weight 1,042 kg
Spark EV
- All electric version of Spark
- Modified architecture from Spark
: Slightly longer and wider
- Increased vehicle mass by 310 kg
due to battery unit
- Upper and rear structure enhanced
Vehicle Introduction of Spark, Spark EV
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1998
Production :
1,118,000
Matiz
Matiz 2
2006
Production :
896,000
Spark
Launch 2009
Production :
1,145,000
Spark EV
2013
1st Generation
2nd Generation
3rd Generation
Spark
Debut in US 2012
Chronology
Vehicle Introduction of Spark, Spark EV
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Africa
South
America
North
America Europe
Australia
Spark Spark EV
India
Korea Changwon
Plant
Manufacturing Footprint & Sales Market
Vehicle Introduction of Spark, Spark EV
Vietnam
S/Africa
Colombia
Uzbek
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A Globe-Trotting
City Car
That Packs
A Lot of Punch
Chevrolet’s first mini-car for the US and Canadian markets
Aimed at urban customers who want a stylish and practical vehicle that is easy to drive and own
Highest-selling among super-minis in US
Chevrolet Spark
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Chevrolet Spark
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Awards & Accolades of Chevrolet Spark
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100% pure electric fun, advanced technology
that enables gas-free driving
City-sized fun that’s easy to love
Technology and infotainment
Chevrolet Spark EV
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Chevrolet Spark EV
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Awards & Accolades of Chevrolet Spark EV
The 2014 Chevrolet Spark electric vehicle is the most fuel-efficient vehicle
sold in the United States: - Miles per gallon equivalent of 119 combined, 128 city and 109 highway
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Functional Performance of Spark
Named IIHS 2014 “Top Safety Pick” first and only in mini-car segment
- Achieved “Good" scores in the moderate overlap front,
side, roof strength, and head restraints tests
- Scored an “Acceptable" in IIHS's new Small Overlap Test
Euro NCAP “4 stars” in 2009
Korean NCAP “1st grade” in 2010
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* Data quoted from
www.safercar.org, www.iihs.org
Functional Performance of Spark
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BIW Stiffness & Lightweight Index
Functional Performance of Spark, Spark EV
Torsional Stiffness = Spark : 18.3 kNm/deg
= Spark EV : 20.1 kNm/deg
Light weight index = Spark : 3.42
= Spark EV : 3.55
Competitive level of body stiffness among mini vehicles
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Parts modified
Parts added
Spark
Spark EV
BIW Variants
Body-in-White Design Concept
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BIW Variants - Underbody
Spark
Spark EV
Parts modified
Parts added
Body-in-White Design Concept
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Spark
Sheet Metal Material Selection
Mild
Steel
35%
High-Strength Steel
65% of Body Mass
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Spark EV
Sheet Metal Material Selection
Mild
Steel
28%
High-Strength Steel
72% of Body Mass
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TWB Application
Spark
* No TWB applied in Spark EV
Sheet Metal Material Selection
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Structural adhesive for Spark / Spark EV
* Total length : 4.7m
Structural Adhesive & Foam Application
Structural foam for Spark EV
* Inside of Rear Rail
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Advanced Frame Structure
- Fully Connected Frame Structure with Homogenous Contour of Frames - Maximized Connections between Frames (3D joints)
Non Frame Parts Removed / Material Gage Minimized
High Force Load Attachments Positioned only on Frames
High Efficiency Design for Crash Performance
Body-in-White Design Concept
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Advanced Frame Structure
Fully Connected Frame Structure with Homogenous Frames
Rear quarter view
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Maximized Connection between Frames (3-Dimensional Joints)
Seat C/Member (“H-spider”) to Rocker / Tunnel
#4 Bar to Rear Rail
#5 Bar to Rear Rail
#1 Bar to Front Rail
Rear Rail to Rocker Front Rail to Upper Rail
Dash Brace
Advanced Frame Structure
Roof Front Bar C-Pillar Upper
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High Force Load Attachments only on Frames
Advanced Frame Structure
Powertrain Mount To Front Rail
Exhaust Pipe to Cradle
Exhaust Pipe to Tunnel Bridge
Exhaust Pipe to Rear Rail
Rear Seat Back Striker on C-Pillar Reinf. Exhaust Pipe
to #4 Bar
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Entire Ring - Rear Body
Rear Roof Frame C-Pillar Reinf. Rear Wheelhouse Brace Rear Floor Center Cross Member
Global Stiffness Performance – Rear End Torsion
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Crash Performance - Frontal Offset Crash
* Data & video source
: www.iihs.org
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BIW Design Concept – Frontal Crash
Load Path – Frontal Crash
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Front Rail Construction
Straight contour of Front Rail with minimized internal Reinforcement
Section
Straight Front Rail Extension reaches to Rear Floor
Straight Tunnel Side Rail reaches to Rear Floor
BIW Design Concept – Frontal Crash
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“Bow” Cross Member construction
Connection between Rail rear face to Front Hinge Pillar
A
A
Sect A-A
Straight & rectangular section
Dash Cross Member
BIW Design Concept – Frontal Crash & SOF
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Rocker Front Construction
Corner Doubler in Rocker Inner
BIW Design Concept – Frontal Crash & SOF
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Crash Performance – Side Impact
* Data & video source : www.iihs.org
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Load Path – Side Crash
“H-Spider” Material DP1000
Crash Performance – Side Impact
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A B
Sect A-A
Sect B-B
Diaphragm & Block Bracket aligned with Cross Members
Sect C-C
C
Crash Performance – Side Impact
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Load Path – Rear Crash
BIW Design Concept – Rear Crash, 88KPH
“Bow” construction helping secure rear cabin zone
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Maximized joint of Rear Rail to Rocker
Rear Rail to Rocker
Corner Doublers
BIW Design Concept – Rear Crash, 88KPH
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“Bow” Cross Member construction
Maximized joint of #4 Bar to Rear Rail
Square section #4 Bar
Rear Floor Front / Center Cross Member
Closed section #5 Bar
Maximized joint of #5 Bar to Rear Rail
BIW Design Concept – Rear Crash, 88KPH
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Overall
Rating
Curb
Weight
(kg)
Peak
Force
(kg)
Strength-to-
Weight
Ratio
Source
Spark G 1,042 4,615 4.43 IIHS test
Spark EV Not tested
Performance - IIHS Roof 4x Strength
Video & data source : www.iihs.org
Spark Spark EV
Peak Force
Spark
Peak Force
4,615 Kg
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Body Design Strategy – Spark EV
Affordable Body for Electric Vehicle
High Structural Efficiency of EV Unique Parts
Support Heavier Vehicle Weight (+ 310 kg)
Protect High Voltage Parts (Battery Unit, etc.)
BIW Design Concept
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Crash Performance – Spark EV, Rear Crash, 88 kph
High V
Battery
Module
Crumple zone
only 196 mm
★ ★ Protect battery
during crash
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Bolt-on protector bar for battery unit protection
PHS applied on Rear Rail & Cross Member
Structural foam insert
Crash Performance – Spark EV, Rear Crash, 88 kph
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Summary
General Motors First Global Mini Car
Won IIHS 2014 “Top Safety Pick”
Achieved IIHS Small Offset Front “Acceptable” Rating
Body Torsional Stiffness Exceeds Global Requirement
High Strength Steel Utilization over 65%
Optimized Body Design for Supporting Higher Mass of EV
Enhanced PHS Application for Supporting EV Battery Unit
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Thank you for your attention ! Ickhee Han
GM Korea
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North American
Light Vehicle Metallic Material Trends
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