Automotive Engineering - May 2019 - 8
TECHNOLOGY
REPORT
Why JLR is reviving the inline-six
commitment of delivering an electrified option on
all new models from next year. It will appear first
in the new Range Rover Sport HST, and is
manufactured on a new line at JLR's
Wolverhampton facility. Automotive
Engineering's Europe Editor Stuart
Birch spoke with JLR's engine programs chief engineer Jon Harris for
details on its development.
The all-new 3.0L I-6 delivers a claimed 294 kW (394
hp) and 550 N·m (406 lb·ft) while meeting the EU6b
emission standard and still providing a 12-kg (26.4 lb)
weight-saving vs. the outgoing V6.
The market may have been surprised by Jaguar
Land Rover's decision to offer the latest Range
Rover with an I-6 gasoline engine, but it's been
on the company's development list since the
Ingenium engine series was conceived more
than eight years ago. With refinement a salient
Range Rover selling point, it was determined the
I-6 had sufficient advantages over a V6 (including manufacture) to tip the balance in its favor.
Derived from the company's modular (500cc
per cylinder) Ingenium-series inline-4, the new
3.0-L I-6 produces 294 kW (394 hp) and 550
N·m (406 lb·ft) while meeting the EU6b emission standard when installed in the new Range
Rover Sport HST (top), putting it well into the
SUV muscle league. The new mill incorporates
an electric supercharger powered by a 48V
mild-hybrid regenerative system capable of
spooling to 65,000 rpm in 0.5 seconds. It "virtually eliminates" lag from the engine's twin-scroll
turbocharger, delivering a torque rise rate during transient accelerations of up to 300 Nm/s.
With the decision to move away from outsourced (Ford and PSA) engines made several
years ago, the new I-6 contributes to Land Rover's
8 May 2019
Ingenium is a multi-role (gasoline and
diesel) modular engine range, but was
a 6-cylinder gasoline envisioned from its
concept, and if so when was that?
Harris: The 6-cylinder gasoline engine was
envisaged from the conception of the
Ingenium engine series more than eight years
ago. Initial focus was put on the 4-cylinder
gasoline and diesel 2.0L engines, but the [inline] 6-cylinder 3.0L engine was always
planned and the factory footprint provisioned
from the outset.
You are using a 48V mild hybrid system. Can
you put some more detail on that?
JH: The engine is fitted with a belt-driven integrated starter/generator (BSG) which replaces
the alternator. The machine acts as the electrical
energy supply system for the vehicle and stores
lost energy in a 48V battery during a vehicle
over-run condition. The energy can then be reapplied as torque assist through the belt drive
system to allow the combustion engine to run in
a more efficient, optimized state delivering improved fuel economy. The BSG system also facilitates seamless engine stop/start events that
are almost imperceptible.
JLR decided to use an electric supercharger
and twin-scroll turbocharger for the I-6; can you
provide some detail about that strategy?
JH: We have worked with Valeo as the Tier-1
supplier to deliver the electric supercharger
system, which works alongside the main engine turbocharger to deliver pressurized air
into the engine. Vehicle drivability is a key attribute for Jaguar Land Rover and the selection
of the engine boosting system is directly linked
to the delivery of this attribute. The electric
supercharger was developed to capitalize on
the available energy from the 48V system and
deliver class-leading levels of drivability by
SAE INTERNATIONAL
BOARD OF DIRECTORS
Paul Mascarenas, OBE
President
Mircea Gradu, PhD
2018 President
Todd Zarfos
2020 President Elect
Pascal Joly
Vice President - Aerospace
Ken Washington, PhD
Vice President - Automotive
Landon Sproull
Vice President -
Commercial Vehicle
Pierre Alegre
Treasurer
David L. Schutt, PhD
Chief Executive Officer
Gregory L. Bradley, Esq.
Secretary
Donald Nilson
Jeff Varick
Rhonda Walthall
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SAE Members in a given area. For more
information, please visit sae.org/sections
or contact SAE Member Relations Specialist
Abby Hartman at abby.hartman@sae.org.
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Collegiate Chapters
Collegiate Chapters are a way for SAE
International Student Members to get
together on their campus and develop
skills in a student-run and -elected
environment. Student Members are vital
to the continued success and future of
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you the engineering knowledge you
need, participation in your SAE Collegiate
Chapter can develop or enhance other
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more information, please visit students.
sae.org/chapters/collegiate/ or contact
SAE Member Relations Specialist Abby
Hartman at abby.hartman@sae.org.
AUTOMOTIVE ENGINEERING
JLR
PROPULSION
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Automotive Engineering - May 2019
Table of Contents for the Digital Edition of Automotive Engineering - May 2019
Automotive Engineering - May 2019
Contents
Editorial: Choking on the haze of California vs. the Feds
SAE Standards News
Supplier Eye
What We’re Driving
Technology Report
Road Ready
New platform, chic sheetmetal for tech-centric 2020 Range Rover Evoque
Lightweighting 2019
F1 streamlines for closer racing
Unlocking DfAM’s potential
Product Briefs
Reader Feedback
Companies Mentioned, Upcoming, Ad Index
Q&A
Automotive Engineering - May 2019 - Intro
Automotive Engineering - May 2019 - Automotive Engineering - May 2019
Automotive Engineering - May 2019 - Cover2
Automotive Engineering - May 2019 - Contents
Automotive Engineering - May 2019 - Editorial: Choking on the haze of California vs. the Feds
Automotive Engineering - May 2019 - 3
Automotive Engineering - May 2019 - SAE Standards News
Automotive Engineering - May 2019 - Supplier Eye
Automotive Engineering - May 2019 - What We’re Driving
Automotive Engineering - May 2019 - 7
Automotive Engineering - May 2019 - Technology Report
Automotive Engineering - May 2019 - 9
Automotive Engineering - May 2019 - 10
Automotive Engineering - May 2019 - 11
Automotive Engineering - May 2019 - 12
Automotive Engineering - May 2019 - 13
Automotive Engineering - May 2019 - Road Ready
Automotive Engineering - May 2019 - 15
Automotive Engineering - May 2019 - New platform, chic sheetmetal for tech-centric 2020 Range Rover Evoque
Automotive Engineering - May 2019 - 17
Automotive Engineering - May 2019 - Lightweighting 2019
Automotive Engineering - May 2019 - 19
Automotive Engineering - May 2019 - 20
Automotive Engineering - May 2019 - 21
Automotive Engineering - May 2019 - 22
Automotive Engineering - May 2019 - 23
Automotive Engineering - May 2019 - 24
Automotive Engineering - May 2019 - 25
Automotive Engineering - May 2019 - F1 streamlines for closer racing
Automotive Engineering - May 2019 - 27
Automotive Engineering - May 2019 - 28
Automotive Engineering - May 2019 - 29
Automotive Engineering - May 2019 - Unlocking DfAM’s potential
Automotive Engineering - May 2019 - 31
Automotive Engineering - May 2019 - 32
Automotive Engineering - May 2019 - 33
Automotive Engineering - May 2019 - Product Briefs
Automotive Engineering - May 2019 - 35
Automotive Engineering - May 2019 - 36
Automotive Engineering - May 2019 - 37
Automotive Engineering - May 2019 - Reader Feedback
Automotive Engineering - May 2019 - Companies Mentioned, Upcoming, Ad Index
Automotive Engineering - May 2019 - Q&A
Automotive Engineering - May 2019 - Cover3
Automotive Engineering - May 2019 - Cover4
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