Engine That Was To Replace The Xu But Was Scrapped Due To Cat Laws Com

[johnhenry 20]

Morning all

 

On one of those long rambling chats to a man in his lockup who did some work on my car, he started mentioning there was an engine designed to replace the XU, that would have been a better engine in terms of efficiency/combustion and emissions. However the CAT law came into place and the engine was forgotten about.

 

the guy knows his stuff, but i have never heard anyone else talk/mention it. wondering if some of the seasoned peugeot gurus will have any info on it?

Cheer

sJohn

[welshpug 1,657]

Don't remember hearing anything but you have to wonder if it was the EW they were working on way back then as its not too dissimilar to the XU in many ways and does seem to produce better torque, be lighter and seemingly more reliable.

[Batfink 201]

I very much doubt there was a special unused engine. The 16v XU changed to the iron bottom end 2.0 and the 306 had the next evolution before the gti-6 came along.

The 1.8 306 engine was alloy bottom end and is not a step up in design, the EW range was alloy and lightweight but not a massive leap, just subtle improvements along with advances in ecu management.

[Henry Yorke 269 3 Cars]

He could be mixing it up with the Group S version of the T16 XU.

[thug pug 7 1 Cars]

Maybe he was thinking about the great (not) HPI EW 10D that sold loads (not) and cheap for parts like the high pressure pump and injectors (not).

 

Rab E.

[RossD 44]

Before CAT's were made mandatory, there were several manufacturers developing 'Lean Burn' engines, it's not inconceivable that PSA had such a development in the pipeline. The problem arose though that with a CAT you had to keep the AFR around 14.7, thus instantly killing off any possibility of running weaker to save emissions and fuel, therefore, in Aug 1992 when all cars had to be fitted with a catalytic converter any lean burn engine design would have been relegated to the scrap heap.

 

Of course it could have also just been pub talk, we know how reliable that is.

[blue_haddock 2]

in Aug 1992 when all cars had to be fitted with a catalytic converter any lean burn engine design would have been relegated to the scrap heap.

 

 

Several late 90's toyotas used a lean burn engine

[RossD 44]

Several late 90's toyotas used a lean burn engine

 

Several manufacturers did - Notably Japanese like Honda, Toyota, Nissan etc etc. Trouble is, you need a complicated catalyst setup and so they are more expensive to produce. Do away with the need for Cats and these lean burn designs can have excellent consumption figures.

There are a couple of schools of thought that mandatory catalysts were introduced as a result of pressure from industry and not from an emissions viewpoint - Remember a cat actually converts other pollutants (which a lean burn engine has minimal quantaties of) to CO2, the apparantly 'evil' gas!

Thats the stupid thing about the catalyst regulation - Even if you can meet or exceed the required emissions targets, you still need the cat!

[johnhenry 20]

follwing the idea of the PSA lean burn engine, this came up

 

http://books.google.co.uk/books?id=dTHxh9SAF-AC&pg=PA121&lpg=PA121&dq=PSA+lean+burn+engine&source=bl&ots=R7iXzDh4f_&sig=P1LRUGszCA_QyGovnBsmXvm9kIM&hl=en&ei=g3qcTtKWJoiq8AOSsdHZBQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBwQ6AEwAA#v=onepage&q=PSA%20lean%20burn%20engine&f=false

 

good lil read!

 

any engines make it into production? any japanese engines im particularly interested in?

[Baz 421]

Ford had a 'lean burn' version of the CVH too, 1.8 iirc?