IV. Engine Specifications
Engine type:
The current Powertainer uses a 6.7 Liter Cummins turbo diesel. Proposed future units will use a spark fired, turbo-charged, industrial GM V-8. See accompanying brochure for complete info.
Displacement: 8.8L (537ci)
Compression Ratio: 10:1
Bore and Stroke: 4.35 in x 4.50 in (115.06 mm X 114.3 mm)
Crankshaft: Forged and nitrided steel
Heads: Cast iron, high flow design
Engine exhaust emissions:
We do not yet have emission numbers for the Cummins engine based Powertainer. Measured numbers from the standard 10kW Power Pallet, with Kubota spark fired 962cc engine, are as shown in the below charts. These measurements are without any post-engine catalytic converter, filter, or other exhaust cleanup components.
New features :
1. Longer runtimes (now up to 24 hrs, w/daily servicing)
Constant ash removal system w/24 hour, easy servicing catch can.
Relocated, improved cyclone ash system, also w/24 hour, easy servicing catch can.
New hopper design holds 76% more fuel in same footprint.
2. Increased fuel flexibility via “Reversed Flow Reduction”
New compound hearth architecture: Downward combustion, Upward reduction
Eliminate reduction bell packing by “fluffing” fuel with horizontal and vertical gas flow
Active fines purge by mechanical agitation and motivated fluid flow
3. Improved general usability and maintenance
Hand wheel side access port
Cyclone relocated to open side of Power Pallet
Most bolt flanges eliminated. Replaced with twist on or level lock solutions
Lower total reactor height for lower hopper and easier fuel fill
4. Increased materials longevity and reliability
High temp 310 alloy hearth
Thicker airlines in special 321SS alloy
5. Improved air and gas sealing
Weld in hearth and air lines. No mechanical joints in thermal sections
Reduced flanges and bung penetrations
All gasketing converted to high temp graphite packing rope
6. Increased gas energy density
Full wrap insulation of all vessels
Improved internal heat isolation between pyrocoil and air/gas annuli
Increased reduction time with “reversed flow reduction”
Improved gas cooling before engine
7. Improved Filtration
New high efficiency cyclone design
8. Improved Manufacturing Efficiency
Integrated pyrocoil and reactor vessel
Mechanically formed flanges and bead stiffened vessels
Seam welded vessels