Fill me in on the turbochargers

[nova3930]

I guess what I'm confused about is that Ford told me no idling because that's what ruins an egr system.

I'd imagine what they mean is no extended idling. Combustion temps are somewhat lower in a diesel at idle, contributing to particulate production and the particulates are what clog the EGR as I understand the issue. A high idle would help the issue, but it would have to be mighty high to eliminate it entirely.

 

[Soundguy]

the extended idling warning is more aimed at guys that may park at lunch and eat a sandwich and read a paper with the ac on.. or go into a place and leave pooch in the truck with ac going... or standing in a parking lot yapping with the guys and whoa.. 30m has passed... or pulled over to take a phone call that turns into 3 phone calls and an internet search and some email.

A short warm up and cool down is not a bad thing..

 

[Walkin Horse]

Hey I've done that. Won't do it anymore.

 

[ShowroomShine]

So put the caveat that turbos only improve emissions when the entire system is designed to do it. They can be added in such a way as to just produce more power, primarily by dumping in more fuel to go along with the increased air volume.

I'll agree to that. Turbo's do nothing for emissions when simply added to a motor. An entire system designed around a turbo can have an effect on emissions sure.

 

[downslope]

Back in the mid-late 90s Ford added turbos to 3 cyl 10 series, 2810, 2910, 3910, etc; renamed them 30 series, 3930, etc. Strictly for emissions. Same done with Deere 3 cylinders. Deere manual advises about idling and cooldown needs.

 

[Egon]

Some places the high idle is required to keep the engine temperature up so the heater can warm you up. Probably have radiator air flow restrictors too.

 

[Verticaltrx]

I'll agree to that. Turbo's do nothing for emissions when simply added to a motor. An entire system designed around a turbo can have an effect on emissions sure.

Tell that to Deere then. The 5045E, 5055E, 5045D and 5055E have turbos strictly for emissions reasons. Heck, the 5045E/D make less power then their older N/A counterparts.

 

[wolc123]

One advantage is they provide a big boost to your engines power/weight ratio. For jobs like cutting lawns, that would be a plus, for ground engaging work, not so much. An even bigger one, in these days of astronomical fuel prices, is that they let you squeeze significantly more power out of every gallon. Personally, I like the sound of the turbo spooling up and down as you work the throttle. It gets a little addicting and I always miss it on tractors (or trucks) without. They are also just about bulletproof in design, and only in rare cases does one hear of any problems with one (at least on JD's anyhow). The reason they make emission control easier, is that less fuel is burned and that burning is what causes the emissions, so yes, a turbo tractor is more "environmentally friendly". You might burn 20% or so more fuel on the same engine, without a turbo, to do the same work. To me, buying a modern tractor without a turbo would be worse than getting one without 4wd. I do suppose that the lower limit on size, before one would become economical, would be around 45 hp.

 

[ShowroomShine]

Tell that to Deere then. The 5045E, 5055E, 5045D and 5055E have turbos strictly for emissions reasons. Heck, the 5045E/D make less power then their older N/A counterparts.

Your missing what I'm saying.

 

[GManBart]

Tell that to Deere then. The 5045E, 5055E, 5045D and 5055E have turbos strictly for emissions reasons. Heck, the 5045E/D make less power then their older N/A counterparts.

The Deere system wasn't just thrown onto an existing design to increase power, it was a complete package put together with the intent to lower emissions.

What ShowroomShine was saying is that if you take engine X that makes 50hp, and you throw a turbo on it to get 65hp, the emissions won't be improved in any significant way.