Cummins Asia Pacific Magazine - Issue 1 2023

Cummins unveils new
B4.5 marine engine.
PACKING A
MIGHTY PUNCH
Cummins has announced availability of its new
hybrid-compatible B4.5 propulsion and auxiliary
engine for Asia Pacific marine markets.
Available as a stand-alone engine with
controls system, as a generator set or
as a hybrid-ready package, the light but
power dense B4.5 is designed for both
recreational and commercial marine
applications.
The B4.5 may be small and compact but
it packs a mighty punch, offering a power
range of 150-250 hp in propulsion format
and 76-112 kWm (50 Hz) prime power in
auxiliary format.
“This robust, fuel efficient pairing
continues the tradition of the timehonoured
Cummins B-series family of
which millions of engines have been built
since its inception in the mid-1980s,” said
Wally Kafer, marine business manager for
Cummins South Pacific.
“The B-series has found its way into every
conceivable application around the world,
and the latest evolution now landing on
Australian and New Zealand shores meets
even higher reliability, durability and
power density targets and is also quieter
and cleaner.”
Based on the proven industrial
engine, the new B4.5 marine
powerhouse complies with IMO II and
US EPA Tier 3 emissions regulations
without the use of aftertreatment.
It also expands Cummins’ hybrid
compatible packages beyond the current
QSB6.7 and QSL9 and shares many
of the proven QSB6.7 marine specific
components in a smaller footprint.
As a propulsion engine, the B4.5 is suited
to shaft drive and stern drive applications.
Best-in-class fuel economy
Thanks to its optimised turbocharging, the
4.5-litre engine features best-in-class peak
torque for greater acceleration and also to
make it easier to maintain speed, even for
vessels with high loads.
The high-pressure common rail fuel
system delivers class-leading fuel
consumption and greatly reduced noise
and vibration while the cast water-cooled
exhaust manifold makes for lower surface
temperatures and improved overall
performance.
▲ Scan here
or click here
for more info.
The latest evolution
of the Cummins
B-series meets even
higher reliability,
durability and power
density target, and is
quieter and cleaner.
The air intake system includes commercial
and recreational reusable washable air
cleaners for more cost savings.
The electrical system is offered in both 12
and 24 volts with simple electrical interface
connections that can be integrated with
Cummins’ C Command engine monitoring
systems. The product also features engine
protection and derate reducing the risk of
catastrophic failure.
Cummins is confident in the total reliability
of its engines and generator sets. The
B4.5 engine is available with a base
warranty of 24 months or 1000 hours for
high output and light duty applications; 24
months or 3000 hours for intermittent duty
applications; or 24 months or unlimited
hours for continuous duty and prime
power applications.
The B4.5 marine offerings are backed by
Cummins’ extensive network of over
9,000 service and dealer locations around
the globe.
Wally Kafer, marine guru at
Cummins South Pacific.
37