The Cox Powertrain’s two-stroke, opposed-piston diesel engine
is being developed for the Royal Navy’s rigid inflatable boats. The
core module in has a displacement of 3. 6 L that can deliver up to
350 hp per module.
OPPOSED FOR THE MILITARY
Cox Powertrain, Ricardo collaborate on two-stroke, opposed-piston diesel development for U.K. armed forces
BY BILL SIURU, PHD, PE
Over the last several years, two-stroke, compression- ignition, opposed-piston
engines have seen renewed interest,
particularly for military applications.
The U.S. Army is sponsoring the
Next-Generation Combat Engine program with a multi-cylinder, opposed-piston, diesel engine being developed by Achates Power, Inc. and
AVL Powertrain Engineering Inc. (see
June 2013 Diesel Progress).
In Britain, Cox Powertrain Ltd., in
collaboration with engineering con-sultancy Ricardo, is developing an
opposed-piston, supercharged, two-stroke, compression-ignition engine
with funding from the United Kingdom’s Ministry of Defence (MoD).
The impetus for the MoD contract
is for a new diesel outboard engine
for the royal navy’s rigid inflatable
boats. Currently driven by gasoline
engines, they represent a potential
danger from possible fires or explo-
sions when stored below decks.
Also, the Royal Navy, like most of
NATO’s military, is seeking to use a
single heavy fuel whenever possible
for use in everything from tanks,
trucks and ships to aircraft, helicop-
ters and unmanned aerial vehicles
(UAV). The goals are to reduce
the logistics involved in supporting
multiple fuels during military opera-
tions as well as avoiding the safety
risks associated with use of gasoline
under hostile conditions. JP- 8 is the
single fuel for the U.S. military with
F- 34 being the NATO equivalent in
its Single Fuel Policy.