texasgeartrain
Titanium
- Joined
- Feb 23, 2016
- Location
- Houston, TX
A few days ago in the General section, a topic of big generators came up. Kind of drifted later in as things do, to some talk of large bore engines.
BIG generator questions
By coincidence, I was on a motor vessel, a push type tug yesterday. It has a pair of the engines discussed. Thought I'd a bit about it.
EMD, Electro Motive Division, primarily old 2 stoke diesel engines. Mostly used in trains, tug boats, power generation. Though an old engine, and old design, they are still very widely used. Most common model is the 645, all mechanical. Newer 710 models use electronic controls, but still a 2 stroke.
All are vee engines, no inlines that I know. Sizes I typically see are v8, 12, 16, and 20 cylinders. Engine/crankshaft rotation can be standard or reverse rotation. But that rotation is fixed, can't swap back and forth during operation.
They can have blowers, or turbos, or both.
The engine we are looking at is port main engine, pme, on this push style tug:
The main data tag. Model# is what concerns us. L8 of model number means L for left hand rotation, 8 cylinders. 645 is the core model design. The E portion, I forget ha !
Emissions sticker:
HP and rated top speed. This is a lower hp EMD, one blower, no turbo. But it will carry that HP with authority.
Gauge panel while engine is idling, 360 rpm. So total range is 360-900 rpm.
Edit: This post may appear a bit off topic for this section of forums, and is labeled O/T. Have a little patience and I'll explain why I think this is relevant for this section, as it winds down to the conclusion.
BIG generator questions
By coincidence, I was on a motor vessel, a push type tug yesterday. It has a pair of the engines discussed. Thought I'd a bit about it.
EMD, Electro Motive Division, primarily old 2 stoke diesel engines. Mostly used in trains, tug boats, power generation. Though an old engine, and old design, they are still very widely used. Most common model is the 645, all mechanical. Newer 710 models use electronic controls, but still a 2 stroke.
All are vee engines, no inlines that I know. Sizes I typically see are v8, 12, 16, and 20 cylinders. Engine/crankshaft rotation can be standard or reverse rotation. But that rotation is fixed, can't swap back and forth during operation.
They can have blowers, or turbos, or both.
The engine we are looking at is port main engine, pme, on this push style tug:
The main data tag. Model# is what concerns us. L8 of model number means L for left hand rotation, 8 cylinders. 645 is the core model design. The E portion, I forget ha !
Emissions sticker:
HP and rated top speed. This is a lower hp EMD, one blower, no turbo. But it will carry that HP with authority.
Gauge panel while engine is idling, 360 rpm. So total range is 360-900 rpm.
Edit: This post may appear a bit off topic for this section of forums, and is labeled O/T. Have a little patience and I'll explain why I think this is relevant for this section, as it winds down to the conclusion.
Last edited: