Matt1878 Posted May 2, 2013 Share Posted May 2, 2013 Describe the operating principle of a programmed ignition system. Include in your answer the way the ECU inter-acts with other engine control sensors.. MUCH LOVE TO ANYONE WHO ANSWERS THIS:) Quote Link to post Share on other sites
AdamB Posted May 2, 2013 Share Posted May 2, 2013 The engine control unit has a pre-programmed set of tabular data, of which it gathers relevent data from various engine sensors, such as the MAP/MAF, IAT, CTS, TPS, Lambda, knock sensor, to process the defined value from the data table. These various sensors have an influence on the ignition advance and retard, for example if the IAT sensor records a lower value of temperature ignition advance is able to be increased due to the colder air entering the engine thus giving the engine more power on colder nights, rather than hot desert weather. If the engine control unit detects events such as knock/pre-ignition via the knock sensor, it will then retard the ignition timing to save the engine from catastrophic damage, leading to broken pistons, headgasket failures and any increase in combustion pressure from having the ignition far too davanced. Once the engine control unit has gathered the data from these sensors it is then able to "look up" the optimal ignition advance angle, this is sent as signal to the coil which then in turn ignites the spark, depending on if sequential ignition is used, the signal is sent directly to the pencil coil unit. Probably could add some more to that Quote Link to post Share on other sites
Matt1878 Posted May 2, 2013 Author Share Posted May 2, 2013 LEGEEEEEND! Quote Link to post Share on other sites
daniel_g Posted May 2, 2013 Share Posted May 2, 2013 What do yous two study at uni / college ? Quote Link to post Share on other sites
Matt1878 Posted May 2, 2013 Author Share Posted May 2, 2013 I do Motorsport Engineering mate:) Quote Link to post Share on other sites
Beastmode panda Posted May 2, 2013 Share Posted May 2, 2013 Key in, turn key, go fast. Let electronics handle themselves. Assignment over. Quote Link to post Share on other sites
daniel_g Posted May 2, 2013 Share Posted May 2, 2013 Cool man, sounds like a decent course. Rob, you should be a college lecturer. Quote Link to post Share on other sites
jimmymac101 Posted May 2, 2013 Share Posted May 2, 2013 Key in, turn key, go fast. Let electronics handle themselves. Assignment over.Best answer by far Quote Link to post Share on other sites
AdamB Posted May 2, 2013 Share Posted May 2, 2013 What do yous two study at uni / college ? Motorsport Engineering at Oxford uni Quote Link to post Share on other sites
daniel_g Posted May 2, 2013 Share Posted May 2, 2013 Ahh nice one man, sounds very posh lol. Quote Link to post Share on other sites
Beastmode panda Posted May 2, 2013 Share Posted May 2, 2013 http://s688.photobucket.com/user/Bmx_Robb/media/chow1_zps900a2174.jpg.html'> Quote Link to post Share on other sites
ryan lang Posted May 2, 2013 Share Posted May 2, 2013 Motorsport Engineering at Oxford uni oxford brookes? Quote Link to post Share on other sites
jimmymac101 Posted May 2, 2013 Share Posted May 2, 2013 Is lee Riley on your course ? Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 oxford brookes? Yeah man its fucking shit. I wanna leave and get an apprenticeship. I've had to drop 2 modules this year because I was in a group with some numpty's and our work got a shit grade and wasn't prepared to carrying on working with them so dropped the modules. Now I gota take em next year, hoping I can do the work on my own. Atleast that way I can only blame myself for getting a shit grade. Quote Link to post Share on other sites
ryan lang Posted May 3, 2013 Share Posted May 3, 2013 Ahh I applied to go there and they pie'd me off!! HahaGoing to Swansea in September now instead Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 You'll be glad you didn't pal lol. Most of the lecture's are just read off powerpoint presentations. Am really not feeling good about my exams this year. Quote Link to post Share on other sites
ryan lang Posted May 3, 2013 Share Posted May 3, 2013 Haha that's what it's like in college at the moment. Kind of glad I'm staying in Wales to with our student finance system lol Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 I found college a walk in the park lol. This is on another level though! Quote Link to post Share on other sites
ryan lang Posted May 3, 2013 Share Posted May 3, 2013 Yeah it's easy doing it yourself, but there's no point going in if your not getting taught anything lol Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 Ay mate thats exactly it, save my petrol and just download the powerpoint presentations and read em at home! Quote Link to post Share on other sites
Matt1878 Posted May 3, 2013 Author Share Posted May 3, 2013 I only just started this year on the college side as I planned on being a PE teacher or something sport related after school but things changed when I had a bad injury playing football. Went into full time work after I recovered and last year divided to pull my finger out and do something that I love so... Motorsport it was Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 What sorta stuff do you guys do a college? When I did my BTEC it was basically just learning about like engines, ignition systems, diesels, welding etc. I never actually got into the depth of designing, which is what uni is all about. Uni is just full of the maths shit. Quote Link to post Share on other sites
ryan lang Posted May 3, 2013 Share Posted May 3, 2013 im currently doing my last year of an extended diploma in light vehicle maintenance and repair at the moment mate. im going to swansea to do motorsport engineering Quote Link to post Share on other sites
Matt1878 Posted May 3, 2013 Author Share Posted May 3, 2013 We have a formula 1000 Renault that actually competes which is pretty cool... We run the dyno and learn tuning methods. Aswell as the basics.. It's first year so it's all basics to me now but others in my group have never done any work on a car. We do physics, Motorsport related maths and electronics too in the classroom. Maths/science isn't really my strong point, I'm more of a hands on kinda guy Quote Link to post Share on other sites
AdamB Posted May 3, 2013 Share Posted May 3, 2013 Sounds cool, the college I went to had a dyno, was a shit one bare in mind lol. But no lecturer there had any experience in motorsport at all, they were all just normal mechanics that had came to teach, although some were interested in performance cars and racing.Everything I do at uni now is maths, theres very little that isn't. Next year I'll be designing a suspension setup, might see if I can do it on the starlet and see if I can get some idependent rear suspension push rod setup going on Quote Link to post Share on other sites
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