| Forum Home | ||||
| PC World Chat | ||||
| Thread ID: 146374 | 2018-07-16 03:39:00 | Infinity Creates A Variable-Compression (and therefore: Variable Displacement........ | SurferJoe46 (51) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1451595 | 2018-07-16 03:39:00 | ............engine. I am still transfixed with the utter simplicity of this engine: youtu.be |
SurferJoe46 (51) | ||
| 1451596 | 2018-07-16 04:41:00 | simplicity ? :) www.youtube.com |
1101 (13337) | ||
| 1451597 | 2018-07-16 22:32:00 | Interesting. Took me a while to recognise that the rotating disc in the middle was the end of a traditional crankshaft... until then I was asking myself "where is the drive force going, and what is making that thing turn". As for the durability testing, I don't care how many hundreds are being driven around. Put just a few dozen into the hands of teenagers, and then you've got real world stress testing. ;) |
Paul.Cov (425) | ||
| 1451598 | 2018-07-17 03:03:00 | Mazda are doing something very similar | plod (107) | ||
| 1451599 | 2018-07-17 04:07:00 | Just get some piston rings made locally, then you get sort of variable compression : as compression goes down & down over the course of a few months (from way back in my motorbike era) . | 1101 (13337) | ||
| 1451600 | 2018-07-17 05:21:00 | I've always been interested in "The Never-Never Corvette' that had electrical solenoids to open and close the valves . Potentially this can change the compression ratio too if they keep the exhaust valve open longer or open the intake valve later . The valve operating solenoids ran on 86VDC from a special generator - yup - not an alternator! There were flat panel batteries hidden in both doors and other body panels to keep the weight of them spread all over the car and below the belt line to keep the CG lower at the same time . Generators create DC Voltage whereas Alternators require diodes to nullify the Alternating Current (hence the name: "Alternator" from the root of 'alternating current') - and at higher voltage, the generator comes into it's glory as the Amps go down as the Voltage goes up . Kinda neat . And - it allows the solenoids to work much more efficiently than at 13 . 2 VDC out of the alternator . __________________________________________________ ________________________________________________ Gotta keep this short tonight - the refrigerator lost a compressor - it's drawing over 20 Amps and it froze and the thermal limiter trips out and I've got groceries all over the floor in boxes with ice on them and it's a big mess . I can get a compressor for under $100 . 00 USD but no-one will install it for me . THEY want $899 . 99 USD for THEIR compressor and another $650 . 00 USD to install it and flush the system and changed out the receiver/drier at the same time . THEIR warranty is 30 days . I ain't going for it! Like I said - and this now is through Sears Company - they will sell me their compressor for my refrigerator but then their service man won't install it either if they don't provide it too! It's a Rubic's Cube! Here's the kicker ----> the Sears service guy is retiring on Friday this week and he hasn't trained his replacement yet . He doesn't care since he's going fishing . Good on him! But I need my refrigerator fixed NOW --- not in October or November when they finally get a new service guy trained! I may try it myself - but I don't have my evacuation pump nor gauges any more . It's a R134a system, and I'm totally familiar with that gas - was even certified for it in SoCal . The compressor is to be brazed or silver soldered or Sil-Phos'd in and I'll have to add a couple of charging ports --- Gack! Then a receiver/drier and a flush . I think I'll go buy another new refrigerator! Bye-bye $2500 . 00 USD for an equal replacement . |
SurferJoe46 (51) | ||
| 1451601 | 2018-07-17 10:08:00 | What an amazingly ergonomic engine. At last they've put the crankshaft at a height that you don't have to stoop to use the crankhandle. Brilliant. ;) |
R2x1 (4628) | ||
| 1 | |||||