Truck & Off-Highway Engineering - December 2023 - 14

PERKINS
bets big on
SMALLER ENGINE
Allen Chen,
product marketing manager,
Perkins.
" Since a variable turbo regulates
the incoming air, you're able to
have a wide range of performance
from a single engine. "
reduction of up to 3 dB when compared with its current
13-, 15- and single-turbo 18-liter engines. Fuel consumption
has been improved to a claimed 40 kW/L (53.5
hp/L), at 0.45 kW/kg (0.27 hp/lb).
The 2600 Series engines are all compatible with renewable
liquid fuels such as 100% hydrotreated vegetable
oils (HVO), B100 distilled biodiesel and up to B100
fatty acid methyl ester (FAME) standard biodiesel. The
core architecture of the 2600 also reportedly supports
the future development of spark-ignited natural-gas and
hydrogen fuel capabilities.
Integrated ingenuity
One of the main design goals for the 2600 Series was
simplification and integration of various subassemblies
to improve reliability, serviceability and ease of implementation
by end users. Perkins stated that " by modularizing
and eliminating components, the architecture
is space-protected to accommodate configuration adjustments
anticipated for future tiers of emission standards
in the U.S. and EU without relocating customer
connection points. "
Following the presentation at the launch event, TOHE
interviewed Allen Chen, product marketing manager, to
discuss the details of how Perkins accomplished those
goals. Chen discussed several design details of the 2600
Series in depth, such as the integrated fluids module that
14 December 2023
The 2600 Series will replace Perkins' current 13-liter engine, as well as the larger
15- and 18-liter engines.
houses critical components of both the cooling and oil system.
" We started by asking what functions we need the fluids module
to accomplish? You need an oil filter, an oil thermostat to regulate the
oil temperatures, a coolant thermostat, and you still need something
pumping all the water around, " Chen said. " We looked at the components
we previously used to convey coolant and oil and the total was
in excess of 30 jumpers, castings, bonnets and pipes. All of that has
now been condensed into a single fluids module. "
Chen continued, " We started off with the basics, so instead of having
an oil cooler that's on the outside, we tucked the oil cooler
straight into the block. The water is already available, and it's already
circulating in the block and the head, so all it really needs to do is
wash over the plates to cool your oil. This completely eliminated multiple
leakage joints. "
" You also don't see a thermostat housing or any external port for
one on this engine, " he said. " We tailored the architecture so that the
inlets and the outlets were both integrated into the block. The coolant
thermostat is accessed and serviceable through an external panel
and there is no inlet or outlet hose. "
Service simplified
Chen also discussed the design considerations that were made to
improve ease of service for the 2600 Series, such as the cartridgestyle
oil filter instead of a spin-on cannister. " Spin-on filters are very
reliable and very good tech but are a bit of a mess and can often
bond themselves to the mounting surface, " Chen said.
The cartridge filter on the 2600 Series is mounted inverted to
make it more service friendly. " When you remove the cap, there is a
metal tube inside that opens up a passage and the passage lets all
the hot oil drain back into the oil pan. Passages are cast inside the
block, " Chen explained.
TRUCK & OFF-HIGHWAY ENGINEERING
BOTH IMAGES: PERKINS
Truck & Off-Highway Engineering - December 2023

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