Buses...pollution!
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If one is comparing between the latest Euro-4 or Euro-5 diesels versus the latest petrols it's certainly possible !!
One must gauge 'pollution' in the overall sense not just on what their eyes can see coming out from the exhaust pipes. Never assume that what is not seenable is not polluting !Originally posted by stooper:Last time, the newspaper reported that modern diesel cars are even cleaner than petrol cars... I think 1 or 2 months ago already. -
Depends on what component of pollutant you're looking i.e. if merely only on what your eyes can see coming out of the exhaust pipes, then of course the diesel particulate emissions would be more seenable than any emissions from a petrol vehicle. BUT one has to gauge pollution on the overall point of view & from that angle, visible & invisible pollutants considered, i don't find any noticible difference between the latest diesel & petrol vehicles in that overall both are equally 'damaging' to the environment in their different ways.
I'll even not be surprised that the latest diesels have become even 'cleaner' than petrols, depending on what yardstick is used.
Overall the future of the diesel engined vehicle remains very promising, so much so that even the top-class marques like Mercedes-Benz continue to push very strongly in development & sales of their diesel cars, vans etc. If diesel is really overall 'inferior' compared to petrols, i seriously doubt that such a famous marque would have continued in more R&D & sales of their diesels ! Afterall, they expected to value their reputation much more than any other maker around.Originally posted by SBS9828X:no leh, its slightly less than diesel mah -
The g/km of CO2 emissions of a modern diesel car/van tends to be much lower than a petrol model of roughly same engine performance output.Originally posted by SBS9828X:actually, excessive CO2 is dangerous also
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thanks for the explanation... so we cant really compare them... Hey isssit true that diesel has more power?
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I dont no. theres no way to find out untill u do real comparison test.....
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Perhaps do a performance test between the M-B Sprinter van-based ambulances in the SCDF fleet i.e. the petrol engined 314 model versus the diesel engined 316 cDi should give quite 'reliable' results since in both cases the payload are quite similar with similar chassi of same GVW etc.
Essentially the only big difference i find between these 2 models in their fleet is in the engine !! The 314 uses a similar engine as on the SLK 230 convertible car while the 316 CDI similar as on the C 270 saloon car.
My 'forecast' would be that overall, the diesel model would win 'hands down' !
I can confidently 'forget' about the petrol model !!!!
I'll say that's as 'real' as it can get because there's doesn't seem to currently exist any petrol engined 'big bus' of GVW 16 even 13 tons from all the major vehicle makers since practically ALL of them produce diesel engined models of their buses when in the GVW >= 13 tons range. Only in the light commercial vehicle sector (like GVW <= 4 tons) are there some petrol engined mini-buses, vans & trucks available versus the majority diesel models !Originally posted by Takua:I dont no. theres no way to find out untill u do real comparison test..... -
AND because of that what was the result??