Honda Civic 2006
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u dun tok so much hor, later i go dig out one of ur 'longer" threads den u knowOriginally posted by HENG@:u 2 go tok on msn la. want or not? i got u both on msn, i set up group chat for u 2 to knock 9 bells out of each other
eh, u give ur take on how cam phasing works lah. -
my take:Originally posted by tailslide:u dun tok so much hor, later i go dig out one of ur 'longer" threads den u know
eh, u give ur take on how cam phasing works lah.
donch care. honda sux
(u'll thank me later for providing both of u wif a mutual enemy u 2 can kiss n make up over ) -
hybrids are rubbish and I feel that diesel is the way to go...cleaner emissions....more economical and cheaper to buy than hybrids....more power(torque)...the list is endless.....Originally posted by Tayysj:u shld seriously get the hybrid since petrol prices are like o.0
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i support hybrids!
diesel is just another form of un-refined petroleum. sooner or later it (price of diesel) will shoot up. alternative is to find another kind of energy source to power our quest for mobility. -
as for cleaner emissions...i wonder y are they called "green" cars in the 1st place?
i've never known diesel to be having clean emission... -
because diesels are a by-product which would otherwise be thrown away and wasted. Thus if u can make use of a by-product, why not? Even if u see it as a less refined crude. Plus a better FC means less fuel is burnt.
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er yr pt being?Originally posted by tiggersgd: -
[quote]Originally posted by tailslide:
ah, desperate liao muz scold ppl moron ah? relax relax. dun let ppl know u buay steady liao
eh dunno what started personal assaults and name callings first loh... u idiot here and retarded there then i use moron loh... liddat also ish buay steady ah
let me ask u this, at high engine speed how u advance the timing huh? speed up the cam ah? make the cam move faster den ur engine rpm ah? obviously another intellectually challenged individual who cannot understand how cam phasing works.
"cam phasing is controling the timing at which the valves open and shut WITH RESPECT TO the egine speed to ensure efficeint breathing". if the "timing" of the valves is dependant on the engine speed, then u are not controlling any timing at all. the engine go fast, the cam has to go fast. the engine go slow, the cam has to go slow. like dat call variable valve timing for wad?
as for ur link which never say turn the cam backwards, never say means CANNOT turn the cam backwards ah? can bet somemore izit? wow. i'll never understand the workings of a deranged mind. who dunno how to cut and paste links? my 5 year old neighbour can do i
wah then at high engine speeds turn the cam backwards ah?? u keep insisting it turns backwards i also dunno how u come to have this idea.. how... jam brake then pah reverse gear ah at 8000rpm ah like u said...
a SOHC engine has a single cam with both exhaust and intake lobes built into the full length of the cam. when u advance it, the WHOLE sequence of intake and exhaust valve timing would have been advanced by turning the cam in the same direction of the engine. obviously, when u retard it, the WHOLE sequence of intake and exhaust valve timing is retarded by turning the cam in the opposite direction of the engine. u have a situation whereby the number of degrees advance (setting cams forward) or retard (setting the cams in the reverse direction) of a single cam is dictating the the timing of BOTH the exhaust and intake ports. thats the reason why DOHC is superior to SOHC. each cam is independant of the other. either cam be advanced or retarded without the exhaust cam affecting the intake cam and vice versa. thats also how DOHC engines equipped with variable valve timing are able run variable amounts of overlap at different rpms via the number of degrees of advance or retard programmed into the ecu.
ur inability to know how a SOHC cam advance or retard its timing speaks loads of ur ability to reason. need further proof that u are a complete engine idiot?
dun think u know what u talking about.. and so full of errors i dun even know where to start correcting u... machiam pri skool essay liddat.. tiring to mark sia...
so i have. and praytell from which one of my previous posts did u derive that i do not know the diff between vvt-i and DUAL vvt-i? eyes playing tricks on you or premature brain rot?
this is what u spruot out of ur mouth: " i find ur explanation of this the most interesting by far "dual vvt-i means varying valves timing on the intake and exhaust". almost anyone can tell me that vvti stands for variable valve timing. wads the point of expanding the whole meaning of dual vvti?"
btw, i dun need to write a thesis for u 2 know how cam phasing works. i never expected a retard to understand a thesis.
why scared ah.. ball shrink.. scared write everything kenna exposed..acherlli u know nuts.. juz like to shoot pple cos they junior member nia...
well this is my explanation on cam phasing before u start saying i know nothing...
cam phasing basically is to vary the valve timing by shifting the phase angle of camshafts.... in high speed, the inlet camshaft will be rotated in advanced by 30° so to enable earlier intake... at lower engine speed it may be retarded to say 5° as the engine speed doesnt require valves to open as early as when the engine is running at higher loads...so cam phasing allows earlier or later valves opening
so if in a SOHC .. if the phase angle of intake camlobes to exhust cam lobes is fixed... simply by changing the speed of rotation of the cams like u said.. how do we vary the phase angle of the intake with respect to the exhaust throughout the entire engine speed??? and turn backwards some more.. *snigger*
1 feature of cam phasing systems is overlap... overlap is whereby the intake valves and exhasut valves are opened simultaneously... at high engine speed this is to ensure efficient breathing...
whereas at low engine speed it is a means of fuel efficeincy..Since the exhaust valves do not close until the intake valves have been open for a while... some of the exhaust gases are recirculated back into the cylinder at the same time as the new fuel / air mix is injected.... as part of the fuel / air mix is replaced by exhaust gases.. and the exhaust gas may also contain uncombusted fuel/air mix ... therefore less fuel is needed... the engine runs properly at the leaner fuel / air mixture without failing to combust... and combustion is more complete with the exhaust having less uncombusted fuel/air mixture.. -
Register a private diesel car here first then recommend it.Originally posted by AE86tofu:hybrids are rubbish and I feel that diesel is the way to go...cleaner emissions....more economical and cheaper to buy than hybrids....more power(torque)...the list is endless..... 
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can it be a "take a look n read" thing? must there always be a point and so on?Originally posted by HENG@:er yr pt being? -
it can be a take a read n look. but u must say so right?Originally posted by tiggersgd:can it be a "take a look n read" thing? must there always be a point and so on?
u like always wanna chuay dai ji lidat. relax ah. dun take life so tense -
then U're outdated man...LOL...diesels which comply to euro4 emission standards are cleaner than their petroleum counterparts....Originally posted by tiggersgd:as for cleaner emissions...i wonder y are they called "green" cars in the 1st place?
i've never known diesel to be having clean emission...
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cheap cars
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eh...OLD MAN TALK BETTER LISTEN OK....later he take his walking stick and whack u...Originally posted by HENG@:my take:
donch care. honda sux
(u'll thank me later for providing both of u wif a mutual enemy u 2 can kiss n make up over ) -
u think old man like u, girl also whack ah?Originally posted by AE86tofu:eh...OLD MAN TALK BETTER LISTEN OK....later he take his walking stick and whack u... u ungentleman dun assume old man also same pattern as u can. -
last i heard sg dun allow diesel cars cos emmisions carcienogenic.... ???Originally posted by AE86tofu:then U're outdated man...LOL...diesels which comply to euro4 emission standards are cleaner than their petroleum counterparts.... -
i think u read me wrongly...i wonder did u read what was being replied by me??Originally posted by AE86tofu:then U're outdated man...LOL...diesels which comply to euro4 emission standards are cleaner than their petroleum counterparts.... 
i'm talking abt hybrids (as a better alternate source of energy vs petroleum) vs petroleum and indirectly vs diesel (as diesel prices will rise just like petrol is now)...it is abt hybrids first and not abt diesel...as for cleaner, it is subjective and that's y LTA is still investigating on its feasibility in sgp. -
i did say so...u bey tahan me talk like that then dun answer back lor. anyway, i will have many other things to point here n there with. sometimes, things dun need to know "what's the point being?"Originally posted by HENG@:it can be a take a read n look. but u must say so right?
u like always wanna chuay dai ji lidat. relax ah. dun take life so tense
if i want to chuay also chuay better people for their dai ji. y must be u? and since u answer me in the 1st place, who chuay whose dai ji? if u dun chuay my dai ji i will xie tian xie di already....get the picture? 
answering u in this manner means taking life intensely? where's the logic? i can be LOL/ROFL/LMAO while typing to ur replies? never crossed ur mind? this is a forum and if i'm so tense always how to survive till now? anyway, thanks for ur reminder...i am taking life intensely casual now -
my apologies man....anyway if u wanna talk abt green cars I think fuel cell cars are a must...prob is that one car right now(mercedes A-class fuel cell car) costs SG$1.4 MillionOriginally posted by tiggersgd:i think u read me wrongly...i wonder did u read what was being replied by me??
i'm talking abt hybrids (as a better alternate source of energy vs petroleum) vs petroleum and indirectly vs diesel (as diesel prices will rise just like petrol is now)...it is abt hybrids first and not abt diesel...as for cleaner, it is subjective and that's y LTA is still investigating on its feasibility in sgp. -
Originally posted by tiggersgd:i did say so...u bey tahan me talk like that then dun answer back lor. anyway, i will have many other things to point here n there with. sometimes, things dun need to know "what's the point being?"
if i want to chuay also chuay better people for their dai ji. y must be u? and since u answer me in the 1st place, who chuay whose dai ji? if u dun chuay my dai ji i will xie tian xie di already....get the picture?
answering u in this manner means taking life intensely? where's the logic? i can be LOL/ROFL/LMAO while typing to ur replies? never crossed ur mind? this is a forum and if i'm so tense always how to survive till now? anyway, thanks for ur reminder...i am taking life intensely casual now
chey. if i buay tahan u talk, i wun even reply lidat le i was just asking u if it had any bearing on what we were talking about diesel cars previously. Coming right after a bit of a chat on that, isn't it natural to assume it has a bearing on the discussion
nevermind. i know u got a bone to pick with me somehow la. Luckily mi not the petty sort, otherwise that time that argument u also dunno wanna continue until when
chill ok? donch want to start another argument with u. nah i extend truce before anything can really start.
truce to my good buddy tiggersg. lets go drool over some Brabus Vianos -
btw while we're on the topic of green cars here, i'll state for the record that hydrogen fuel cell cars are a dead end in that matter. It really makes no sense when more energy is spent in hydrogen production, than the hydrogen produced is able to provide. Even tho the car itself has no harmful emissions, the emissions from the power station produced during the generation of power for hydrogen production, its more than a car produces using petrol, plus the energy generation process during petrol refinement.
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orh, i said a retard is someone slow in brain development touch a sensitive spot ah? if u not one den so angry for feck?Originally posted by n0x:eh dunno what started personal assaults and name callings first loh... u idiot here and retarded there then i use moron loh... liddat also ish buay steady ah
ever heard of hydraulic cam gears? those are the gismos that give the cam their advance and retard while the engine is moving. and u of course will have no idea wad i'm toking about lah! u are an engine idiot wad!Originally posted by n0x:wah then at high engine speeds turn the cam backwards ah?? u keep insisting it turns backwards i also dunno how u come to have this idea.. how... jam brake then pah reverse gear ah at 8000rpm ah like u said...
the one with broken english wanna correct mine ah? go buy some paper and sticks make a kite lah. i heard marina south very popularOriginally posted by n0x:dun think u know what u talking about.. and so full of errors i dun even know where to start correcting u... machiam pri skool essay liddat.. tiring to mark sia...
so? i flamed u for doing something LPPL like expanding the meaning of dual vvt-i. does that mean i do not know the difference? grammer poor, comprehension muz be better lah. go outside become laughing stock u know?Originally posted by tailslide:so i have. and praytell from which one of my previous posts did u derive that i do not know the diff between vvt-i and DUAL vvt-i? eyes playing tricks on you or premature brain rot?
Originally posted by n0x:
this is what u spruot out of ur mouth: " i find ur explanation of this the most interesting by far "dual vvt-i means varying valves timing on the intake and exhaust". almost anyone can tell me that vvti stands for variable valve timing. wads the point of expanding the whole meaning of dual vvti?"
in case u haven't noticed, my explanation is above the last para u qouted. didn't u go to school? if not how come u cannot tell the diff between a thesis and an explanation? btw, i dun like to shoot junior members. i like to shoot ignorant membersOriginally posted by n0x:why scared ah.. ball shrink.. scared write everything kenna exposed..acherlli u know nuts.. juz like to shoot pple cos they junior member nia...
but u still haven't explained wad happens to the cams MECHANICALLY as they are advanced or retarded! keep saying advance to enable earlier intake and when retarded, the valves dun open as early for feck? if u know how to advance or retard a cam in the first place, why keep avoiding the explanation by using such vague and generic explanations?Originally posted by n0x:well this is my explanation on cam phasing before u start saying i know nothing...
cam phasing basically is to vary the valve timing by shifting the phase angle of camshafts.... in high speed, the inlet camshaft will be rotated in advanced by 30° so to enable earlier intake... at lower engine speed it may be retarded to say 5° as the engine speed doesnt require valves to open as early as when the engine is running at higher loads...so cam phasing allows earlier or later valves opening
lets end this once and for all. juz answer this question:
is it true that u advance a cam by turning it forward and retard it by turning it in the reverse direction or not?
simple yes no answer will do.
hello. earth to mars. since when did i said "simply by changing the speed of rotation of the cams like u said"? u dunno how to argue properly nevermind. mai anyhow misqoute me lor.Originally posted by n0x:so if in a SOHC .. if the phase angle of intake camlobes to exhust cam lobes is fixed... simply by changing the speed of rotation of the cams like u said.. how do we vary the phase angle of the intake with respect to the exhaust throughout the entire engine speed??? and turn backwards some more.. *snigger*
wad u have juz said confirms that not only do u know nuts bout DOHC engines. u know nuts bout SOHC engines . dun u know that the amount of overlap in a SOHC engine is invariable? the amount of over lap is dictated by the amount of duration the inlet cams crosses over to the duration of the exhaust cams. and since both inlet and exhaust lobes are FIXED along a SINGLE cam in a SOHC engine, they cannot be advanced or retarded to affect overlap. the entire cam can only be advanced or retarded along with the whole intake and exhaust timing. if u have been reading, u would realize that this is one of the primary advantages of DOHC which can have either the exhaust cam or the intake cam advance or retard itself to acheive diff amount of overlap.
this is by far ur best explanation of how overlap works. if only i can say the same for the restOriginally posted by n0x:1 feature of cam phasing systems is overlap... overlap is whereby the intake valves and exhasut valves are opened simultaneously... at high engine speed this is to ensure efficient breathing...
whereas at low engine speed it is a means of fuel efficeincy..Since the exhaust valves do not close until the intake valves have been open for a while... some of the exhaust gases are recirculated back into the cylinder at the same time as the new fuel / air mix is injected.... as part of the fuel / air mix is replaced by exhaust gases.. and the exhaust gas may also contain uncombusted fuel/air mix ... therefore less fuel is needed... the engine runs properly at the leaner fuel / air mixture without failing to combust... and combustion is more complete with the exhaust having less uncombusted fuel/air mixture.. -
wahahahaha...nah, just a frenly advice mah. unless u cannot take it. what can i do? i dun "pick bones" lah...Originally posted by HENG@:
chey. if i buay tahan u talk, i wun even reply lidat le i was just asking u if it had any bearing on what we were talking about diesel cars previously. Coming right after a bit of a chat on that, isn't it natural to assume it has a bearing on the discussion
nevermind. i know u got a bone to pick with me somehow la. Luckily mi not the petty sort, otherwise that time that argument u also dunno wanna continue until when
chill ok? donch want to start another argument with u. nah i extend truce before anything can really start.
truce to my good buddy tiggersg. lets go drool over some Brabus Vianos -
i like hybrids!!!!!!Originally posted by HENG@:btw while we're on the topic of green cars here, i'll state for the record that hydrogen fuel cell cars are a dead end in that matter. It really makes no sense when more energy is spent in hydrogen production, than the hydrogen produced is able to provide. Even tho the car itself has no harmful emissions, the emissions from the power station produced during the generation of power for hydrogen production, its more than a car produces using petrol, plus the energy generation process during petrol refinement.