Compact Tractor Diesel Particulate Filters (DPF) Version 2.0

[bearthebruce]

If we had a choice of fuels, I'd probably go for a gas-engined hybrid electric for my next tractor....just for the curiosity factor.
rScotty

Do keep in mind, at present, those high voltage battery packs run north of $7k to replace in most hybrid cars. I expect they will be similar in tractors. The math has to be done to see if the hybrid is cost effective for this application.

 

[jaydee325]

Does anyone know someone who has replaced their battery?

I know several people who were early adopters of Toyota Priuses and to my knowledge, they have not had to replace the battery.

Also, I've seen some posts on here where people have harvested the batteries in clapped out cars for alternate uses.

Kind of seems like a non-issue?

 

[finn1]

That $7k number was being thrown around, without source documentation twenty years ago. Batteries seem to generally last the life of the car in most cases, and the latest numbers I have read are something in the order of $2400 if there is an issue, at 2000k miles.

There are supposedly battery rebuilding and reconditioning services out there.

Electric power is here, and the popularity and availability will only increase.

 

[5030]

That $7k number was being thrown around, without source documentation twenty years ago. Batteries seem to generally last the life of the car in most cases, and the latest numbers I have read are something in the order of $2400 if there is an issue, at 2000k miles.

There are supposedly battery rebuilding and reconditioning services out there.

Electric power is here, and the popularity and availability will only increase.

Maybe, maybe not.

 

[bearthebruce]

That $7k number was being thrown around, without source documentation twenty years ago. Batteries seem to generally last the life of the car in most cases, and the latest numbers I have read are something in the order of $2400 if there is an issue, at 2000k miles.

There are supposedly battery rebuilding and reconditioning services out there.

Electric power is here, and the popularity and availability will only increase.

Yep, the $7k is off for a Toyota - still spot on for a VW/Audi the #1 and #2 brands in the world...

But according to Toyota: in general, you should look for signs of battery wear after 10 years or 100,000 miles.

That also holds for VAG.

I suppose one has to also look at the KWH of the batteries to make sure size entered into the cost equation.

 

[jaydee325]

Getting back to DPFs.

Ran across this recently. While this presentation comes via the trucking industry, many of the issues discussed in this presentation could be related to the issues reported on TBN with DPF problems that go unresolved by dealers.

 

[5030]

I will tell you before I retired, the dealership where I worked bought a machine. It was 20 grand and was a dry machine and probably a good 20% of the DPF's failed to clean and had to be replaced. Tractor or truck, procedure is thew same and I bet failure rate is the same as well. That can on your exhaust is busy collecting soot and regen burns it to ash but it don't go anywhere. Stays right inside the can and has to be cleaned.'''and the ash is hazardous wast too.

 

[rScotty]

SNIP .........That can on your exhaust is busy collecting soot and regen burns it to ash but it don't go anywhere. Stays right inside the can and has to be cleaned.'''and the ash is hazardous wast too.

I've wondered about that. Where does the ash go when it is burned? Smaller particles are generally more dangerous - especially smaller carbon particles. Less obvious, but more hazardous.

Are we really doing anything productive for ourselves or the environment with regenerative burning??
rScotty

 

[jaydee325]

That can on your exhaust is busy collecting soot and regen burns it to ash but it don't go anywhere. Stays right inside the can and has to be cleaned.'''and the ash is hazardous wast too.

According to the information I linked to above, regen does not create ash. Ash comes from engine oil burn and hardening comes from regenerations and coolant leaks.

The real problems are not caused by the DPF, it is the condition of the rest of the engine, such as upstream leaks, that leads to the DPF problems. When these problems occur, ash is typically a contributor to the failure, according to the linked article.

 

[5030]

According to the information I linked to above, regen does not create ash. Ash comes from engine oil burn and hardening comes from regenerations and coolant leaks.

The real problems are not caused by the DPF, it is the condition of the rest of the engine, such as upstream leaks, that leads to the DPF problems. When these problems occur, ash is typically a contributor to the failure, according to the linked article.

Better read a bit closer. Soot (as in unburned particulates, (smoke) is collected in the substrate and burned to a fine ash by regeneration,along with blowby vapor and everything else that gets in the exhaust stream. The noble metal substrate reacts with het and cremates everything but the ash is left and has to be removed from the element. DEF is pre treatment, SCR is post treatment.

You only get so many regens and the element is full and the ECM senses the pressure differential and tells you it's cleaning time. How it works.