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- From: neal@cmptrc.lonestar.org (Neal Howard)
- Newsgroups: rec.autos.tech
- Subject: Re: WATER Injection Any Users ?!
- Keywords: injection, engines, cars
- Message-ID: <Bw4H65.Grn@cmptrc.lonestar.org>
- Date: 14 Oct 92 17:42:05 GMT
- Sender: neal@cmptrc.lonestar.org
- Organization: CompuTrac Inc., Richardson TX
- Lines: 51
-
- In article <4127@sicsun.epfl.ch> boutzev@lcaohp1.epfl.ch writes:
- >Time ago while I had enoughfree time to run trough the news
- >I wondered whatever became of the water injection and
- >you folks from the net provided me with your
- >impressions. Thanks a lot because this urged me into a great
- >decision:
- > -I'm about to build one.....
- >
- >There are at least some details I'll like to know from the ones
- >using this trick on their cars and here I go:
- >
- >-What are the advantages of the water injection ?
- >-Does the water injection harm the engine even if all parameters are set OK ?
- >-Did the milleage increase ? Or decrease ?
- >-What's about the emissions ?
- >
- >Any other comments are welcome BECAUSE I've already ordered the
- >injectors, pump and other hardware and I'm currently working
- >on the control unit.
- >Live testings are intended before the end of the year and this is about the
- >non-return point beyond which I can either obtain some
- >extras or screw up my engine....
- >I'm planning to run some tests on a 80cc 4-stroke Briggs&Stratton petrol
- >engine currently fitted on a generator.
- >The success of these tests will condition the final implementation on my
- >LandCruiser (Diesel, 4.0L TurboCharged).
- >
- >Thanks in advance !
-
- The main purpose of water injection is to allow high compression engines to
- run on lower quality fuel with less detonation. Your B&S engine ain't got
- enough compression to waste time testing water injection upon. Your diesel
- engine MUST have detonation to run (that's what ignites the diesel in the first
- place). An ideal engine to experiment with water injection is one of the old
- high compression muscle cars from the late 60's like a small block Chevy with
- 12.5:1 compression ratio. For an engine with water injection, you must change
- the oil more often since all the blowby gases past the piston rings contain
- so much more water vapor(obviously) and will contaminate the oil faster.
- Benefits include very clean piston tops, combustion chambers/valves since the
- hefty load of steam produced in the cylinders blasts them clean constantly.
- You'll likely get worse gas mileage since the water will remove some heat from
- the combustion process and more fuel will need to be burned to get the same
- amount of heat produced to keep the power output of the engine the same as
- it was before. I do not know how it will affect emissions. Another thought
- for a good test engine would be a late model turbo or supercharged engine
- with high boost pressure since they detonate like crazy on poor gas too.
-
- =============================================================================
- Neal Howard (neal@cmptrc.lonestar.org) CompuTrac, Inc. (Richardson,TX)
- DoD #686 '91 XLH-1200 '70 Kawasaki G4-100cc '69 Cougar XR7-GT390
- =============================================================================
-