Could have had a 2-stroke Neon? (10% better city MPG in factory tests) - Fuel Economy, Hypermiling, EcoModding News and Forum

ksa8907 · 08-21-2012, 11:59 AM

An interesting read i ran across:

Two-Stroke Neon Engines?

MetroMPG · 08-21-2012, 01:15 PM

Interesting. Lots of development money & testing went into that... but none were produced for sale.

I guessed that emissions were the reason it never made it to market - which they say was partly true. (High oxides of nitrogen from lean-running condition).

tjts1 · 08-21-2012, 06:22 PM

If chrysler couldn't get a conventional 4 stroke right, can you imgine how horribly unreliable this thing would have been?

Frank Lee · 08-21-2012, 07:50 PM

In the '90s Orbital two-stroke tech was all the rage and I read they had many license/development agreements... doesn't seem to have panned out though.

cRiPpLe_rOoStEr · 04-21-2013, 08:49 AM

I honestly believe it would worth to try the 2-stroke again, and eventually set it to regular production. The most obvious advantages are that 2-strokes can be made lighter and more compact than a 4-stroke in the same power and torque ratings, but there are also other practical advantages that can be taken into account. They're already one step forward regarding fossil fuel independence, since the use of vegetable-based lube oils (mainly Castor oil) is already widespread among 2-stroke engine enthusiasts, and since the usual practice with 2-strokes is to allow the oil into the combustion process, it reduces eventual risks associated to unproper disposal of waste motor oils. A notable mechanical advantage reflecting on the overall fuel savings is related to the lower internal frictions.

PressEnter[] · 04-21-2013, 10:08 AM

I don't know if it's due to emissions or just unpopularity, but we can't even get the small "snow pups" we use at work with 2-stroke motors anymore.

cRiPpLe_rOoStEr · 04-22-2013, 02:55 AM

Quote:

Originally Posted by PressEnter[]

I don't know if it's due to emissions or just unpopularity, but we can't even get the small "snow pups" we use at work with 2-stroke motors anymore.

Manufacturers can charge a plus for the 4-stroke due to the higher complexity, and the marketing makes the customers move to them.

NoD~ · 04-23-2013, 10:36 AM

I remember reading a year or two ago about a company that was making a "magic" 2-stroke engine. Haven't heard anything about it in a long time, though...

I think this was them...
EcoMotors

jamesqf · 04-23-2013, 01:38 PM

Quote:

Originally Posted by cRiPpLe_rOoStEr

Manufacturers can charge a plus for the 4-stroke due to the higher complexity, and the marketing makes the customers move to them.

Hardly. It's emissions, and noise. Ever watched the cloud of blue smoke that hovers over a bunch of 2-stroke engines - snowmobiles, dirt bikes, etc? And heard the d**ned things?

jamesqf · 04-23-2013, 01:44 PM

Quote:

Originally Posted by cRiPpLe_rOoStEr

Manufacturers can charge a plus for the 4-stroke due to the higher complexity, and the marketing makes the customers move to them.

Hardly. It's emissions, and noise. Ever watched the cloud of blue smoke that hovers over a bunch of 2-stroke engines - snowmobiles, dirt bikes, etc? That's unburned/partly burned fuel/oil mixture.

And have you heard the d**ned things?