What is the horsepower of the 6.0 liter powerstroke diesel?

Answer 1

325 600 tourque

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Improved Answer By: AP_MET

Horsepower is just a broad term denoting 745.7 Watts of power output of any type of mechanical or electrical device.

Foot-Lbs (or Newton-Meters) Torque output at a specific RPM is the true factor in rating a piston engine's performance.

Piston engine horsepower and torque cannot be measured by engine displacement alone.

On piston engines, there are three (3) types of horsepower:

Indicated Horsepower (IHP) = Theoretical horsepower of an entire piston engine at a given RPM.

Brake Horsepower (BHP) = Useful crankshaft horsepower of a piston engine at a given RPM.

Friction Horsepower (FHP) = Horsepower needed to keep a piston engine running at a given RPM.

IHP = BHP + FHP.

Take for instance:

A 2003 Ford Super-Duty F250 Pickup Truck powered by a 6.0 Liter "Powerstroke" 4-Stroke, 8-Cylinder

V-8 Diesel Piston Engine with the following specifications:

Engine: Powerstroke 6.0 Liter (366.14 ci) V-8 / Diesel

Piston Bore Diameter: 3.74 inches (10.99 sq. in.)

Piston Stroke Length: 4.13 inches (0.344 ft.)

Maximum Torque Output: 570 Foot-Lbs @ 2,000 RPM (1,000 pws/min - 4-stroke)

Compression Ratio: 18:1

BMEP - 4-stroke = [(150.8 x 570) / (366.14)] = 234.76 PSI.

BHP = [(234.76 x 0.344 x 10.99 x 1,000 x 8) / (33,000)] = 215.16 BHP.

This particular automotive 4-stroke, 8-cylinder diesel piston engine will develop a crankshaft Brake Horsepower of 215.16 BHP at 2,000 RPM while at its maximum crankshaft Torque output rating of 570 Foot-Lbs.

The higher internal cylinder pressures of diesel piston engines give them a very high torque output at their crankshaft at a much lower RPM and Brake Horsepower compared to gasoline piston engines.

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