Warning: include_once(/homepages/31/d139813187/htdocs/scoobypedia/scripts/stdconfig.php): failed to open stream: No such file or directory in /homepages/31/d139813187/htdocs/scoobypedia/pmwiki.php on line 342

Warning: include_once(): Failed opening '/homepages/31/d139813187/htdocs/scoobypedia/scripts/stdconfig.php' for inclusion (include_path='.:/usr/lib/php7.0') in /homepages/31/d139813187/htdocs/scoobypedia/pmwiki.php on line 342

Warning: Cannot modify header information - headers already sent by (output started at /homepages/31/d139813187/htdocs/scoobypedia/pmwiki.php:342) in /homepages/31/d139813187/htdocs/scoobypedia/pmwiki.php on line 1242
(:groupheader:)!! Introduction <:vspace> The main function of water injection systems is to suppress detonation caused by high temperature and pressure developed within the combustion chamber when the effective compression ratio has been taken beyond the auto-ignition point by either a turbo or a supercharger. Water, with its high latent heat content, is extremely effective for controlling not only the onset of detonation. <:vspace> This is from the Devils Own site: In a piston engine, the initial injection of water cools the fuel-air mixture somewhat, which increases its density and hence the amount of mixture that enters the cylinder. But the greater effect comes later during combustion when the water takes in significant amounts of heat energy as it converts from liquid to gas (steam). This increases piston pressure (torque), reduces peak temperature and resultant NOx formation, and reduces the amount of heat energy absorbed into the cylinder walls. The alcohol in the mixture burns, but at a much slower rate than gasoline. The net result is that the combustion process happens slower, preventing the destructive supersonic shockwave characteristic of detonation. <:vspace> !! Installation <:vspace> To walk through the installation of this water injection kit click the first picture in the gallery below, then click Next. Notes to installer will appear below the pictures. <:vspace> <:block>1516B17B* [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0159.jpg | WaterInjection-IMG_0159.jpg1]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0160.jpg | WaterInjection-IMG_0160.jpg2]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0161.jpg | WaterInjection-IMG_0161.jpg3]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0162.jpg | WaterInjection-IMG_0162.jpg4]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0163.jpg | WaterInjection-IMG_0163.jpg5]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0164.jpg | WaterInjection-IMG_0164.jpg6]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0165.jpg | WaterInjection-IMG_0165.jpg7]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0166.jpg | WaterInjection-IMG_0166.jpg8]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0167.jpg | WaterInjection-IMG_0167.jpg9]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0168.jpg | WaterInjection-IMG_0168.jpg10]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0169.jpg | WaterInjection-IMG_0169.jpg11]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0170.jpg | WaterInjection-IMG_0170.jpg12]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0171.jpg | WaterInjection-IMG_0171.jpg13]] * [[Attach:Knowledge.WaterInjectionInstallation/WaterInjection-IMG_0172.jpg | WaterInjection-IMG_0172.jpg14]] <:vspace> !! Set-up <:vspace> Lay the pipe on the windscreen to set the boost switch first. The author set it somewhere near then drove down the road, watching the boost gauge, till the nozzle started spraying. Once it was set, re-fitted the nozzle. <:vspace> !! Installers First Impressions <:vspace> First impressions are that boost could be raised to 1.5bar, and the knock sensor is saying all ok. The major thing to be noticed is that on full boost the temperature drop is only around 7 degrees. Usually you might expect a temp after the intercooler of anywhere between 14-18c. On the authors installation the intake temperature is 22c, the pre-intercooler temperature is 24c, and before the water injection comes on, post intercooler is around the 15-17c mark. In summery, it makes a major improvement, not only that, the car has no detonation at all AND the author was running it all on 95 at the time. <:vspace> %right%''[-Information Source - SIDC forum thread, republished with permission, [[http://forums.sidc.co.uk/index.php?s=edbae831c3e696d1daea43c39a43a624&showtopic=120681&st=0 | Water Injection System Fitted, With pics]]-]''(:groupfooter:) <:block>