Honeywell has tailored
differentiated solutions for commercial vehicle customers dating back more than
60 years, and is currently immersed in helping manufacturers globally meet
escalating regulatory standards targeting further reductions in carbon dioxide
emissions and improving fuel economy.
Gen III Double-Axle VNT
Honeywell introduced its new
GT17 frame size, double-axle variable nozzle turbine (DAVNT) built on its
third-generation architecture. It is the smallest double-axle variable geometry
turbo ever introduced and serves 2.5L to 4.0L engine sizes.
The movable turbine nozzle vanes are supported
by two axles for enhanced reliability and durability – up to 1.2 million km
life cycles. Honeywell’s patented pressure balance channels exhaust gas to both
sides of the vanes, thereby preventing strong axial loading and reducing
friction and wear while enhancing controllability at the same time. The design
provides light-duty vehicles with engine breaking capabilities typically
reserved for medium-duty applications to help improve overall performance.
Coupled with electric actuation, this turbo
also improves fuel economy 2 to 3 percent from previous industry applications
for these engines and provides improved transient response and enhanced engine
braking, The new GT17 DAVNT will help power vehicles from Isuzu Motors Ltd and
Hyundai Motor Company.
In addition, a larger GT35 DAVNT for medium
duty truck applications with engine sizes between 7.0L and 10L will also be on
display in Hannover. These turbochargers build upon the durability enhancements
inherent to Honeywell’s Gen III architecture with a state-of-the-art
aerodynamic package that provides best-in-class fuel efficiency and enhanced
controllability thanks to its unique compound cambered vanes.
Wastegate and Fixed Geometry Diesel Turbos
Honeywell displayed a new GT45
diesel wastegate turbo for on-highway applications between 11L and 14L. It
features a new aerodynamics package that improves air flow in both the
compressor and turbine stages. Coupled with a new bearing system, the
turbocharger achieves a more than 2 percent improvement in fuel economy as well
as better transient response compared to the previous generation. This
application was designed in China specifically for the Chinese market, which
accounted for more than 1.5 million medium- and heavy-duty industry sales in
2017. Its enhanced design improves durability to help operators meet the
approaching China VI emission standard for heavy-duty vehicles.
Finally, Honeywell also
displayed a new fixed-geometry, electrically actuated wastegate turbocharger
and low-friction bearings – its first high-volume application of an electric
wastegate for commercial vehicles. The electric actuation offers complete
control of the wastegate system, improving cold-start and partial load
operation, and features an airless pressure system for reduced complexity. This
new turbo for light commercial vehicle and off-highway machinery can provide up
to a 2 percent reduction in fuel consumption with improved transient response
and durability. The usage of its electric actuator could bring an additional 1
to 2 percent of improved efficiency at higher engine speeds than a traditional