Voyeurger
Well-Known Member
New Engine (Video from 2008 Read Comments below video)
Its called OPOC (Opposed Piston Opposed Cylinder), and its a turbocharged
two-stroke, two-cylinder, with four pistons, two in each cylinder, that will
run on gasoline, diesel or ethanol. The two pistons, inside a single
cylinder, pump toward and away from each other, thus allowing a cycle to be
completed twice as quickly as a conventional engine while balancing it's own
loads. The heavy lifting for this unconventional concept was performed Prof.
Peter Hofbauer. During his 20 years at VW, Hofbauer headed up, among other
things, development of VWs first diesel engine and the VR6. The OPOC has
been in development for several years, and the company claims its 30 percent
lighter, one quarter the size and achieves 50 percent better fuel
economy than a conventional turbo diesel engine.
DARPA Development
An extremely lightweight opposed piston opposed cylinder (OPOC) engine has
been developed under a Defense Advanced Research Projects Agency (DARPA)
program. FEV and Advanced Propulsion Technologies (APT) were asked by the
U.S. Army Tank Automotive Research Development and Engineering Center
(TARDEC) to modify this engine for heavy-truck applications. Analyzing the
two stroke scavenging, the side-injection combustion, and the structure of
the key components shows the potential of the OPOC concept. It is predicted
for the 465 kW (650 hp) OPOC truck engine. The OPOC engine was designed to
be modular. Each module is self-contained and delivers 325 hp. The modules
are connected together via the Modular Displacement Clutch, which
synchronizes the modules for achieving even firing when both modules are
functioning. With an optimized scavenging process, the special design
features of the OPOC engine offer a significant step towards the potential
of the two-stroke engine having double the power density of a four-stroke
engine. An estimated 90% scavenging efficiency has been achieved with unique
gas exchange characteristics of the OPOC engine and the use of an electric
assisted turbocharger. The OPOC engine runs with almost two times the engine
speed (3800 rpm) along with a large cylinder stroke (167.53 mm), as a result
of the split stroke of the opposed piston structure. This also improves the
power density by another factor of 2.
Video demonstration here:
Watch "Opposed Piston Opposed Cylinder Engine" Video at Engineering TV
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Its called OPOC (Opposed Piston Opposed Cylinder), and its a turbocharged
two-stroke, two-cylinder, with four pistons, two in each cylinder, that will
run on gasoline, diesel or ethanol. The two pistons, inside a single
cylinder, pump toward and away from each other, thus allowing a cycle to be
completed twice as quickly as a conventional engine while balancing it's own
loads. The heavy lifting for this unconventional concept was performed Prof.
Peter Hofbauer. During his 20 years at VW, Hofbauer headed up, among other
things, development of VWs first diesel engine and the VR6. The OPOC has
been in development for several years, and the company claims its 30 percent
lighter, one quarter the size and achieves 50 percent better fuel
economy than a conventional turbo diesel engine.
DARPA Development
An extremely lightweight opposed piston opposed cylinder (OPOC) engine has
been developed under a Defense Advanced Research Projects Agency (DARPA)
program. FEV and Advanced Propulsion Technologies (APT) were asked by the
U.S. Army Tank Automotive Research Development and Engineering Center
(TARDEC) to modify this engine for heavy-truck applications. Analyzing the
two stroke scavenging, the side-injection combustion, and the structure of
the key components shows the potential of the OPOC concept. It is predicted
for the 465 kW (650 hp) OPOC truck engine. The OPOC engine was designed to
be modular. Each module is self-contained and delivers 325 hp. The modules
are connected together via the Modular Displacement Clutch, which
synchronizes the modules for achieving even firing when both modules are
functioning. With an optimized scavenging process, the special design
features of the OPOC engine offer a significant step towards the potential
of the two-stroke engine having double the power density of a four-stroke
engine. An estimated 90% scavenging efficiency has been achieved with unique
gas exchange characteristics of the OPOC engine and the use of an electric
assisted turbocharger. The OPOC engine runs with almost two times the engine
speed (3800 rpm) along with a large cylinder stroke (167.53 mm), as a result
of the split stroke of the opposed piston structure. This also improves the
power density by another factor of 2.
Video demonstration here:
Watch "Opposed Piston Opposed Cylinder Engine" Video at Engineering TV
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