| Endurance Engine Lifetime | |
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Ruba Visiteur
Number of posts : 5 Registration date : 2009-02-13
| Subject: Endurance Engine Lifetime Sat 15 May - 9:35 | |
| Hi everyone!
Has anyone already driven a 6-hour race, for example? I usually had approx 2 hours, not more, that is why i don't know if engines have enough engine resource (lifetime) for a 6-hour race. What should be mentioned for such longer races? As far as i can understand, i should be careful with 4 things: - boost 1 - limit revs by 200-300 rpms from max - careful at shifting? - big enough radiator to avoid overheating
Anything else? | |
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vevex Enduracers
Number of posts : 1463 Age : 60 Localisation : Le Mans Registration date : 2006-10-17
| Subject: Re: Endurance Engine Lifetime Sat 15 May - 10:04 | |
| It's recommanded to cut the engine during the pit stop | |
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KKS Visiteur
Number of posts : 3 Registration date : 2010-05-17
| Subject: Re: Endurance Engine Lifetime Mon 17 May - 23:34 | |
| Hello, I have mb same question but I need more info about RPM For example I watch to 997RSR engine file and see this key values: - Quote :
- LifetimeEngineRPM=(8700.0, 75.0)
LifetimeOilTemp=(110.0, 1.0) LifetimeAvg=93600 // average lifetime in seconds LifetimeVar=14400 And how quickly LifetimeAvg will be lifetime decrease if rpm is: 1. RPM=2132 (default RPM) 2. RPM=8000 3. PRM=8750 4. PRM=8800 Just for test: Oil temp=const=100 and boost=1 Second question is about boost. How boost level affect to life time? Explanation in example it's will be very nice. :) And finaly if you have a time for this, could you create a table with values for multiplier to oil and rpm? For example like this http://spreadsheets.google.com/pub?key=teRCrVKdTd_VZ13QXKh8jWg&output=html For x1 I mean 1 second in game cut 1 point from LifetimeAvg+/-LifetimeVar value And maybe 8625-8700 have a x0.5 ? or? Anyway I will be very glad to hear the answer to any of the questions. Thanks | |
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MaD_King EnduRacers beta test
Number of posts : 3119 Age : 50 Localisation : Toulouse (31) FRANCE Registration date : 2006-09-27
| Subject: Re: Endurance Engine Lifetime Tue 18 May - 10:08 | |
| When you add boost, there is more torque and more rpm added. This increase the consumption of the car and if the RPM lead to pass over the 8775 you wear your engine and the oil temp increase too. If the oil temperature pass over the 110, you wear your engine.
And the LifetimeVar=14400 is a random value managed by rFactor that's impact the wear of the engine without any calculation possible of the results of this (it will be 0 or 1000 or 14400 removed from the 93600 seconds of time life of the engine).
There is no formula to find the exact point of failure, it's linked to you downshift too, if you pass the RPM limit too often, you can break the engine. | |
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klo-che Admin
Number of posts : 7807 Age : 39 Localisation : France Registration date : 2006-04-01
| Subject: Re: Endurance Engine Lifetime Wed 19 May - 10:06 | |
| thread moved in the correct section. | |
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KKS Visiteur
Number of posts : 3 Registration date : 2010-05-17
| Subject: Re: Endurance Engine Lifetime Mon 24 May - 22:37 | |
| MaD_King, so if oil temp is 111 deg. I wear my engine. And if temperature is 112 or 115 deg. wear will be same or it's will be higher then must be at 111 deg.
Same with RPM too?
I not blown my engine if I: 1. Downshift nicely 2. Keep my RPM lower the 8700 3. Keep engine oil temp lower then 110
If I kept all this things I may drive Porsche 997RSR 24/7 and engine never blown? | |
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Pandamasque Visiteur
Number of posts : 289 Age : 40 Registration date : 2010-03-19
| Subject: Re: Endurance Engine Lifetime Tue 25 May - 1:55 | |
| Just to confuse you even more I made a simple test. I changed the engine.ini values to: - Code:
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LifetimeAvg=1 // average lifetime in seconds LifetimeVar=0 A human driver (myself) is able to drive a few laps with this. It once died after almost 1 lap, the next time it did more than 2 laps at normal racing speed and didn't fail. Then I tried using 'AI Control toggle' and it always died after just ~1 second, even before it reached the pit exit.
Last edited by Pandamasque on Sun 16 Jan - 23:06; edited 1 time in total | |
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MaD_King EnduRacers beta test
Number of posts : 3119 Age : 50 Localisation : Toulouse (31) FRANCE Registration date : 2006-09-27
| Subject: Re: Endurance Engine Lifetime Tue 25 May - 10:10 | |
| - KKS wrote:
- MaD_King, so if oil temp is 111 deg. I wear my engine. And if temperature is 112 or 115 deg. wear will be same or it's will be higher then must be at 111 deg.
It will be higher - KKS wrote:
Same with RPM too?
Same - KKS wrote:
I not blown my engine if I: 1. Downshift nicely 2. Keep my RPM lower the 8700 3. Keep engine oil temp lower then 110
If I kept all this things I may drive Porsche 997RSR 24/7 and engine never blown? Yes but there is the variance of the LifetimeVar that's is random taken by rFactor to generate default in engines. | |
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KKS Visiteur
Number of posts : 3 Registration date : 2010-05-17
| Subject: Re: Endurance Engine Lifetime Sun 16 Jan - 22:54 | |
| Come back to problem...
Can u tell me when engine blown with this values? If i keep 1400 RPM always and 80 engine temp? LifetimeEngineRPM=(1400.00,50.0) LifetimeOilTemp=(80.0,1.0) LifetimeAvg=20 // average lifetime in seconds LifetimeVar=0
I calculate - it's must be 20.000 sec. And it is. But can you tell me how much it will be with RPM's 1450? 1500? 1600? 1400? 1350?
All my calculates at that values are wrong.
Simple as I can add that... if RPM's are 1400-50 Engine blown at 0.667*20=13.34 sec, and if 1400+50 - 1.334*20=26.68 sec... but 0.667 isn't half. | |
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MaD_King EnduRacers beta test
Number of posts : 3119 Age : 50 Localisation : Toulouse (31) FRANCE Registration date : 2006-09-27
| Subject: Re: Endurance Engine Lifetime Mon 17 Jan - 9:47 | |
| What is the Oil temperature when you drive, this is the major element to compare. | |
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| Subject: Re: Endurance Engine Lifetime | |
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| Endurance Engine Lifetime | |
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