QUOTE(ben_panced @ Mar 15 2012, 02:51 PM)
why proton didnt upgrade cps to euro 5 spec?
or maybe adding cvvt on its intake side to complement the cps?
as been informed, yup, can do cps to meet euro 5, but the power will reduce especially torque wise. Couple vvt n cps, it can be done, but it is high cost coz initially pheonix project is for cfe only, it just that the engineers try also to come out with the na version. Cfe n iafm+ has similar based compare to cps which using distributor n spark coil while cfe n iafm+ using cop@distributorless system.
Iafm+ 50% component diff from iafm. It is not visible, more focussing on cooling element to ensure engine is always at atmost optimum temperature so that it will work at optimum efficiency, emmision compliancy coz current cps n iafm is only euro 4. Come in also 32bit torquebased ecu to replace 16bit loadbased ecu in cps n iafm, which means better controlling of torque spread n broader torque band.
Still remember when exora come out, when they explaining on hp@kw, people all saying that is not important, the most important is torque. But now they are focusing on torque, people say why less hp n etc.
Look at cps n iafm+ torque. Cps 150nm@4500rpm.
Iafm+ 150nm@4000rpm.
Cps 85-90% of torque at 3000rpm.
Iafm+85-90% of torque at 2000rpm.
Cps 125hp@6500 rpm.
Iafm+108hp@5750rpm.
Which one has better drivability? Which one has better top speed? Iafm+ has better drivability while cps is better at top end speed. But how much is hp generated for cps@5750 rpm? I think cps generate around 112hp at the same rpm, not that much, only 4hp more.
Erm, if cps been compliant to euro 5, so let say the hp maybe reduce to 120hp, but what if the torque is 140nm only?
Look at the new avanza engine 1.5, based on same engine, but old one didnt comply with euro 4, current one comply, so look how much hp n torque that they need to sacrifice for meeting eu emmission.
Couple vvt n cps n vim, not only really complicated, but also expensive to build. Thats why toyota mainly using vvti n dual vvti, rather than their own valvematic tech engine.
Added on March 15, 2012, 3:53 pmQUOTE(ben_panced @ Mar 15 2012, 02:51 PM)
why proton didnt upgrade cps to euro 5 spec?
or maybe adding cvvt on its intake side to complement the cps?
as been informed, yup, can do cps to meet euro 5, but the power will reduce especially torque wise. Couple vvt n cps, it can be done, but it is high cost coz initially pheonix project is for cfe only, it just that the engineers try also to come out with the na version. Cfe n iafm+ has similar based compare to cps which using distributor n spark coil while cfe n iafm+ using cop@distributorless system.
Iafm+ 50% component diff from iafm. It is not visible, more focussing on cooling element to ensure engine is always at atmost optimum temperature so that it will work at optimum efficiency, emmision compliancy coz current cps n iafm is only euro 4. Come in also 32bit torquebased ecu to replace 16bit loadbased ecu in cps n iafm, which means better controlling of torque spread n broader torque band.
Still remember when exora come out, when they explaining on hp@kw, people all saying that is not important, the most important is torque. But now they are focusing on torque, people say why less hp n etc.
Look at cps n iafm+ torque. Cps 150nm@4500rpm.
Iafm+ 150nm@4000rpm.
Cps 85-90% of torque at 3000rpm.
Iafm+85-90% of torque at 2000rpm.
Cps 125hp@6500 rpm.
Iafm+108hp@5750rpm.
Which one has better drivability? Which one has better top speed? Iafm+ has better drivability while cps is better at top end speed. But how much is hp generated for cps@5750 rpm? I think cps generate around 112hp at the same rpm, not that much, only 4hp more.
Erm, if cps been compliant to euro 5, so let say the hp maybe reduce to 120hp, but what if the torque is 140nm only?
Look at the new avanza engine 1.5, based on same engine, but old one didnt comply with euro 4, current one comply, so look how much hp n torque that they need to sacrifice for meeting eu emmission.
Couple vvt n cps n vim, not only really complicated, but also expensive to build. Thats why toyota mainly using vvti n dual vvti, rather than their own valvematic tech engine.
This post has been edited by mat79: Mar 15 2012, 03:53 PM