compression ignition..

https://www.yahoo.com/finance/m/06628167-f04d-305e-85a1-a2b95555ab37/ss_compression-ignition-engines.html

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Do I detect some sarcasm here...the headline should have the important words Homogenous Charge in front of compression ignition, vastly different from our engines

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1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

Model "diesel" engines (which don't run on diesel nor have a fuel injection system) are HCCI.

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1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

Except the Mazda engine is not HCI and it still uses a spark plug at every combustion even but they somehow still claim that it's compression ignition. There's other articles that explain this in more detail.

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CENSORED due to not family friendly words

I remember reading an article in a magazine (I think it was Popular Mechanics) back in the 90s regarding the development of compression-ignition petrol engines. The problem then (and I assume still applies now) was the generation of NOx due to the lean burn. Diesels are being slammed for their NOx production, the original Honda Insight with it's lean-burn engine was killed off due to NOx production, and I see nothing mentioned in the article how they're dealing with NOx...

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

I read it properly and you're quite right. Previous articles I had read didn't mention that bit...

So to me they're basically running it lean and using a controlled form of detonation (spark ignites the fuel partly and causes a pressure and heat spike to ignite the rest of the charge?) wonder how strong the internals are. Not as strong as a real diesel I'd imagine.

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

I wonder,this gasoline does not lubricate like diesel, so I don't expect million mile motors.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

They actually do mention it, claiming that lower combustion temps will reduce NOX output. My very basic understanding of NOX is that lower temps in general reduce it's output, but I am far from an expert on the subject.

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Brian
87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017
02 F350 Powerstroke 180K
05 Chevy Express 1 ton w/Royal Utility box 120K
08 Infiniti FX-35 40K
15 Golf Sportwagen TDI 35K
10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K

With modern gasoline fuel control , better piston ring sealing and oils, there is far less fuel contamination of oil than in days past. Since oil in a gasoline engine stays cleaner much longer, any advantage a diesel had is long gone.

And remember, a diesel " car " isn't any different than a gasoline " car " so don't expect the " car " portion to last any longer just because it is a diesel.

This reminds me how formula 1 cars are starting to use pre chambers in their engines in order to run an air fuel mixture that is as lean as possible.

As the price for fuel goes up, lean air fuel mixes for gasoline cars will soon be king of the road, since they are very efficient. Then again, I'd imagine the cost of producing such engines to be more expensive than the regular gasser...

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

The Honda CVCC (Compound Vortex Controlled Combustion) ran pre chambers and an extra intake valve to inlet a fuel rich mixture as needed. A friend had one and I dont ever remember him at a gas station with it. I had a 1972 Newport and was at the gas station quite a bit.

I had an old ALL CAST IRON Briggs and Stratton engine which was used on a David Bradley walking tractor which used a prechamber....it was a gas engine....Even the Flywheel with fins was cast iron...

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Some 80's Mitsubishi 4 cylinders ( also found in Chrysler products ) used the same process called MCA Jet. It is far easier to light off a rich mixture than a lean one. On the Mitsu it really isn't a pre chamber, it is a nozzle that directs a small amount of a rich mixture towards the spark plug that is in the standard location.

That's all well and good at cruising speed when the fuel consumption is low, but what about when the engine is under load? Accelerating, climbing a grade, passing someone, towing? The engine MUST run richer at those periods and that's when the NOx production goes up significantly in a lean-burn condition. I have to wonder if these new engines are going to be using massive amounts of EGR with a cooler like the modern diesel truck engines do to meet emissions standards...

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

So did the Honda cvcc run a rich fuel mixture in the prechambers, while the combustion chamber was extremely lean? Causing the spark from within the prechamber to ignite the cylinder? Funny how such "groundbreaking" technology has been around for ages, it's just that now we're able to hone in these combustion processes at very precise levels. Nobody is reinventing the wheel, just making sure it can roll a little bit better...

I've also read articles that stated cost of emission control devices will go up if these powerplants are implemented in mass.