What is a long stroke engine?
A long-stroke engine is an engine that has a smaller bore than its stroke. So the Bore to stroke ratio is less than 1. For a given engine speed, a longer stroke increases engine friction and as a result, increases the stress on the crankshaft. ‘It’s because of the higher peak piston acceleration.
Does a longer stroke mean more torque?
Instead, long-stroke engines produce higher torque at lower RPMs. However, less air-fuel mixture means quicker combustions at low RPMs, resulting in higher torque at low RPMs. Also, piston speeds are higher.
Are long stroke engines more efficient?
A bigger bore with a shorter stroke also allows an engine to rev higher, which creates more horsepower. Conversely, a long stroke is generally better for fuel efficiency, because it reduces surface area during combustion. That allows combustion to do once again do more work and make the engine more efficient.
What is better more torque or more horsepower?
Torque, simply, is the ability of a vehicle to perform work — specifically, the twisting force applied by the crankshaft. Horsepower is how rapidly the vehicle can perform that work. Because there is generally a limit on how fast you can spin an engine, having higher torque allows for greater horsepower at lower rpms.
What should be the length of stroke?
The stroke length is how far the piston travels in the cylinder, which is determined by the cranks on the crankshaft. Engine displacement is calculated by multiplying the cross-section area of the cylinder (determined by the bore) by the stroke length.
Can you reuse old pistons?
One option for reducing the cost of an engine overhaul rebuild is to reuse the pistons. The pistons are typically the single most expensive part in a rebuild kit. Taking them out can make the kit affordable for nearly everyone’s budget.
What is the best long stroke engine for a ship?
Long stroke horizontal engine. Good to install on a ship that has low gravity point such as a paddle steamer a luxury liner. Best fit the boiler B3, B2F. The best-seller T2DR is the basic model which is very easy to handle. Best fit with the boiler B2F. Compact but powerful, single cylinder but the double-acting long stroke cylinder.
How many strokes does a steam engine produce in one revolution?
Thus in one revolution of the crankshaft, a two cylinder steam engine like the one in a Stanley, produces as many power strokes as an 8 cylinder internal combustion engine does.
What is the best engine for a paddle steamer?
Long stroke horizontal engine. Good to install on a ship that has low gravity point such as a paddle steamer a luxury liner. Best fit the boiler B3, B2F. The best-seller T2DR is the basic model which is very easy to handle.
What is a double acting steam engine?
All the steam engines are “double acting”. This means that pressure is applied to both sides of the piston as the engine operates. The 4 inch piston of a 20-horsepower Stanley engine is pushed by steam to one end of the cylinder (the cylinder is 5 inches long) and then it is pushed in the opposite direction by steam.