ON-ROAD 8.8LNA PROPANE 270 hp @2600 rpm / 565 lb-ft @1600 rpm
PSI’s medium-duty 8.8L Naturally Aspirated engine is a U.S. EPA-certified propane power unit developed from the block up to be reliable and durable.
The 8.8-Liter engine provides industrial, bus, truck and marine OEMs a fully integrated drop-in solution with uncompromised power and performance, maximum fuel efficiency, emissions certification and fuel flexibility.
Superior engine performance is driven by an ECU that integrates and coordinates all critical functions including: governor, variable ignition timing, air fuel ratio control, PSI 8.8-LITER NA LPG ENGINE DATA knock suppression and engine protection. All PSI engines feature the same fuel systems and controls, simplifying Cylinders V-8 application development and support. Induction system Naturally aspirated Combustion system Spark-ignited GENERAL DATA Displacement 535 cid (8.767 L) 1) Heavy-duty, easy-to-integrate design Compression ratio 10.1:1 • Forged, induction-hardened crankshaft Bore & Stroke 4.35 in x 4.50 in (110.5 mm x 114.3 mm) • Forged rods and pistons Rated Power 270 hp (201 kw) • Oil bath lubrication provides piston cooling Rated Torque 565 lb-ft (766 nm) • Common controls, harness, exhaust, cooling & mounts • Chassis integration Cooling system Water-cooled 2) “Diesel-like” performance with “gasoline-like” operation Engine Coolant Capacity 16 qts • Low-speed design offers unique torque & power curves Engine Oil Capacity 7.0 qts (6.62 L) • Suitable replacement for diesel-powered applications Engine Oil Capacity (with filter) 7.5 qts (7.10 L) • Smooth, quiet, reliable power Direction of rotation Clockwise from front • 25% less weight results in improved fuel economy Fuel Type Propane 3) Custom configurations Emissions Certification US EPA & CARB HD-SI • Customizable OBD-HD certified controller Dry Weight 748 lb (339 kg) • Flexible J1939 communications • Various accessory drive configurations • SAE2 and SAE3 transmission mounts • Optional block heater, oil pan heater and oil cooler PACKAGING DIMENSIONS (A) 32.3 in / 82.0 cm (B) 27.3 in / 69.3 cm (A) Length (B) Width (C) Height Base Engine 32.3 (82.0) 27.3 (69.3) 30.0 (76.2) In (cm) w/ FEAD 36.2 (91.9) 27.3 (69.3) 30.0 (76.2) In (cm) (C) w/Flywheel Housing 36.2 (91.9) 33.3 (84.6) 32.5 (82.6) In (cm) 30.0 in 76.2 cm PSIENGINES.COM ON-ROAD 8.8LNA PROPANE 270 hp @2600 rpm / 565 lb-ft @1600 rpm
ENGINE HIGHLIGHTS PSI’s 8.8-Liter engine offers modern features in a durable package that easily integrates into existing OEM applications. The system combines fuel flexibility, uncompromised power and maximum efficiency.
Crankshaft Intake Manifold Tuned long-runner provides higher Cylinder Heads Forged and induction-hardened torque and special air gap design keeps Modernized, heavy-duty, high-flow steel crankshaft creates durable block engine air cooler for improved efficiency heads create fast burn to improve capable of 1,000+ ft-lb of torque efficiency and reduce emissions
600 500 TORQUE & POWER CURVES 565 lb-ft (766 nm) Liquid Propane-Injected 500 @ 1,600 rpm 400 HORSEPOWER (hp)
400 300
300 270 hp (201 kw) 200 @ 2,600 rpm TORQUE (ft-lbs)
200 100 Torque Power
100 0 800 1,200 1,600 2,000 2,400 2,800 3,200 ENGINE SPEED (rpm)
Power Solutions International201 Mittel Drive, Wood Dale, IL 60191 POWERING A GREENER FUTURE T: 630-350-9400 • F: 630-350-9900 • psiengines.com