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Really??
1 year 7 months ago #247614
by Rome K/G
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1 year 7 months ago #247616
by Deas Plant.
You have a wonderful day. Best wishes. Deas Plant.
Replied by Deas Plant. on topic Really??
Hi, ROME K/G.
I responded to the 'smar- tarse' who said the fuel was donated;
Hi, @NewZealandRoadTrips .
Doesn't make any difference if the fuel is donated or bought-n-paid-for, that is still fuel wasting, opening the throttle too quickly once contact has been made.
On toppa that, the pushcat operator is carrying his blade too high while pushing, holding the scraper's rear wheels off the ground and changing the angle of the scraper's cutting edge, thus reducing the efficiency of the scraper while loading.
It'z all very well having lotza 'muscle' but it also helps to know how to use said 'muscle'.
Just my 0.02.
You have a wonderful day. Best wishes. Deas Plant.
Hi, Neil.
Back when that D10 came out - 1977-79 -, big mobs of black smoke had not yet become a hanging offence. You didn't have to open the throttle very much to get a cloud of soot. How-wevver, that big a soot cloud does tend to show that the operator just ripped it wide open.
Just my 0.02.
I responded to the 'smar- tarse' who said the fuel was donated;
Hi, @NewZealandRoadTrips .
Doesn't make any difference if the fuel is donated or bought-n-paid-for, that is still fuel wasting, opening the throttle too quickly once contact has been made.
On toppa that, the pushcat operator is carrying his blade too high while pushing, holding the scraper's rear wheels off the ground and changing the angle of the scraper's cutting edge, thus reducing the efficiency of the scraper while loading.
It'z all very well having lotza 'muscle' but it also helps to know how to use said 'muscle'.
Just my 0.02.
You have a wonderful day. Best wishes. Deas Plant.
Hi, Neil.
Back when that D10 came out - 1977-79 -, big mobs of black smoke had not yet become a hanging offence. You didn't have to open the throttle very much to get a cloud of soot. How-wevver, that big a soot cloud does tend to show that the operator just ripped it wide open.
Just my 0.02.
You have a wonderful day. Best wishes. Deas Plant.
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1 year 7 months ago #247617
by Rome K/G
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1 year 7 months ago #247618
by trainzkid88
Replied by trainzkid88 on topic Really??
black smoke on any engine is wasted fuel and excess exhaust temperature. do it too much and you'll shorten its life fairly quickly. also sudden increases in power dont do the driveline any favours either. that is an advantage of the diesel electric drives in the bigger gear it governor controlled not dickhead controlled
all engines need to run at their perfect air fuel ratio which is what electronics have enabled.
but the old mechanical systems worked fairly well if properly adjusted. problems happen when people fiddle with the adjustments so just bloody leave em alone.
all engines need to run at their perfect air fuel ratio which is what electronics have enabled.
but the old mechanical systems worked fairly well if properly adjusted. problems happen when people fiddle with the adjustments so just bloody leave em alone.
The following user(s) said Thank You: Rome K/G
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1 year 7 months ago #247621
by 8C 361
My 1H D8 with the D13000 engine will not make black smoke under any condition. I almost think they had things figured out better with the old high pressure injectors. The first diesel engines were set up for economy and efficiency. The horsepower race had not yet begun.
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1 year 7 months ago #247622
by neil
Cheers,
Neil
Pittsford, NY
Mack had the puff limiter in the '70s, maybe as far back as the '60s? but I was curious if Cat had them. Perhaps that was a function of the air-fuel ratio valve - sounds like it would be.If the tractor in the video has one, given the amount of smoke, it's either malfunctioning or disconnected. Maybe the Cat and Mack components have had different operating characteristics. I know the Macks I drove would slowly and steadily spool up with limited amounts of smoke but I would notice the occasional driver that had disconnected his and he'd produce mosquito-choking amounts of smoke. Nowadays that seems to be the domain of pickups with lifted suspension.
My father's old Lister 3/1 could also pump out the smoke but the governor just opens the pump up completely when the rpm is below spec so no extra components on that to limit smoke. I'd be curious about your 1H - could it be that the fuel delivery rate per stroke was just limited by design so the a-f ratio just couldn't get that high?
My father's old Lister 3/1 could also pump out the smoke but the governor just opens the pump up completely when the rpm is below spec so no extra components on that to limit smoke. I'd be curious about your 1H - could it be that the fuel delivery rate per stroke was just limited by design so the a-f ratio just couldn't get that high?
Cheers,
Neil
Pittsford, NY
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1 year 7 months ago #247625
by Deas Plant.
You have a wonderful day. Best wishes. Deas Plant.
Replied by Deas Plant. on topic Really??
Hi, Neil.
I'm no mechanic or any other sorta 'ex-spurt' but my understanding is that big mobs of black smoke came in with turbochargers, powershift transmissions and decelerators and the need for the turbo to spool up again as the throttle was re-opened after changing direction or throttling down for some reason. The black smoke is fuel that was not fully burned because the turbo had not yet spooled up enough to pack enough air into the cylinders to fully burn the fuel that was being injected.
If everything was adjusted as it should be, the black smoke stopped once the turbo had spooled up again.
Just my 0.02.
I'm no mechanic or any other sorta 'ex-spurt' but my understanding is that big mobs of black smoke came in with turbochargers, powershift transmissions and decelerators and the need for the turbo to spool up again as the throttle was re-opened after changing direction or throttling down for some reason. The black smoke is fuel that was not fully burned because the turbo had not yet spooled up enough to pack enough air into the cylinders to fully burn the fuel that was being injected.
If everything was adjusted as it should be, the black smoke stopped once the turbo had spooled up again.
Just my 0.02.
You have a wonderful day. Best wishes. Deas Plant.
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1 year 7 months ago #247626
by juiceman
The second diesel truck I ever bought here, had a Cummins MVT 400. Until air pressure was built up to 60-90?psi, it would chug white smoke, then clear up. The throttle response reminded me of the modern day electronic engines we have now. Not snappy at all, compared to the old school Big Cam motors. Love it or hate it, we dealt with it. JM
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1 year 7 months ago #247631
by trainzkid88
Replied by trainzkid88 on topic Really??
any one who says dpf system are bad no not really you just have to understand how they work.
yes there was a issue with toyota and others becuase they didnt tell the customers you have to take it for a long drive at high way speeds once or twice a month to allow the unit to get properly hot and clean itself and it takes about half 3/4 of a hour to get up to temp and complete the process.
or you have to service it every 3 months so the mechanic can hook the test computer up and do it manually.
yes a funny incident happened in new south wales with a highway patrol bmw that happened to be a diesel and a patch of long grass they had pulled up a speeding motorist and left the car idling as they did their duties. the car entered regen mode as it had been on a drive and got up to temp, which then raised the exhaust temp even more and ignited the grass under the car and all they could do was watch the bloody thing burn to the ground!
yes there was a issue with toyota and others becuase they didnt tell the customers you have to take it for a long drive at high way speeds once or twice a month to allow the unit to get properly hot and clean itself and it takes about half 3/4 of a hour to get up to temp and complete the process.
or you have to service it every 3 months so the mechanic can hook the test computer up and do it manually.
yes a funny incident happened in new south wales with a highway patrol bmw that happened to be a diesel and a patch of long grass they had pulled up a speeding motorist and left the car idling as they did their duties. the car entered regen mode as it had been on a drive and got up to temp, which then raised the exhaust temp even more and ignited the grass under the car and all they could do was watch the bloody thing burn to the ground!
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