Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
WKetel
User Rank
Rookie
re: What were they thinking: An engine that consumes its own exhaust
WKetel   5/27/2013 10:08:53 PM
NO RATINGS
@ Ron Neale, if an engine kept running with a potato in the exhaust it simply proves that there was a serious leak upstream. I had a vehicle that developed a plugged catalytic converter and it would stall as soon as the engine caught. The clue to the problem was the screaming exhaust gas leaking out around the manifold heat valve. EGR only runs back a bit of gas, not enough to be useful. And a modern engine running properly has not much oxygen coming out the tailpipe, nor any hydrocarbons, and if it works perfectly, no CO, only CO2.

Ron Neale
User Rank
Blogger
re: What were they thinking: An engine that consumes its own exhaust
Ron Neale   4/26/2013 7:36:02 PM
NO RATINGS
Betajet beat me to it. I know from personal experience that Exhaust Gas Recirculation (EGS) has been in use for a long time. Many, many years ago I left the 455ci engine of my Grand Prix running in the Harris Semiconductor car park, with the keys locked inside. Not wishing to damage the car by breaking in, I decided to draw on the experience of my miss-spent youth and use the old potato up the exhaust pipe trick. All we then had to do was wait. We waited and waited and waited. How was it possible that an engine could keep running when no gases are exhausted. The answer the EGS system. Author Brian you will be pleased to know the Bluebell Railway has reopened the cutting to East Grinstead.

DWILSON373
User Rank
Rookie
re: What were they thinking: An engine that consumes its own exhaust
DWILSON373   4/26/2013 7:03:44 PM
NO RATINGS
Modern steam locomotives (with would be 1900 and later) would have substantial difficulties with this enhancement. The steam exhausted from the cylinders is blown out through the exhaust stack to increase the draft in the firebox and boiler. (This creates the chuffs in the exhaust.) I doubt that wet exhaust would have permitted much improvement in the unburned materials in the exhaust.

betajet
User Rank
CEO
re: What were they thinking: An engine that consumes its own exhaust
betajet   4/19/2013 5:36:07 PM
NO RATINGS
Actually, we do. It's called Exhaust Gas Recirculation, though it's mostly used to reduce nitrogen oxides (no laughing matter): http://en.wikipedia.org/wiki/Exhaust_gas_recirculation Also, I read somewhere that in Los Angeles, California the emissions from a Toyoto Prius are cleaner than the air going in. It seems the SULEV Prius reburns hydrocarbons spewed out by SUVs and the many old cars still on the roads.



Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Want a Voltera Desktop PCB Printer?
Max Maxfield
16 comments
I just received an email from my chum Javi in Spain. "Have you heard about Voltera (VolteraInc.com)? It's a Canadian company that is going to offer desktop-size PCB printers for fast ...

Aubrey Kagan

Have You Ever Been Blindsided by Your Own Design?
Aubrey Kagan
37 comments
I recently read GCHQ: The uncensored story of Britain's most sensitive intelligence agency by Richard J. Aldrich. The Government Communication Headquarters (GCHQ), Britain's equivalent of ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...