predominance
English translation: balance
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| 16:58 Jun 22, 2004 |
| French to English translations [PRO] Tech/Engineering - Transport / Transportation / Shipping | |||||||
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|  Selected response from: Bourth (X) Local time: 21:34 | ||||||
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| Summary of answers provided | ||||
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| 4 | predominance |
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| 4 | balance |
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| 3 | predominance |
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| Discussion entries: 2 | |
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Answers
48 mins confidence: 
predominance Explanation: Il semble que pour que l'ensemble marche il faut que la pression de freinage soit inégale entre le tracteur et la remorque l'une 'prédominant' l'autre. - pouquoi supposez-vous qu'il doit y avoir une pression égale ? |
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| The asker has declined this answer Comment: Vous avez raison - j'ai suppose une egalite au lieu d'une balance. Merci beaucoup | ||
52 mins confidence:
predominance Explanation: I hope this helps! This has been found on vehicles with Wabcos load-sensing valve. The load-sensing valve causes a large pressure in the pressure area up to 200 kPa. To compensate this pressure loss the brake valve of the trailer must be set on 25 kPa predominance. If a non-pressure-increasing valve is mounted on the trailer, a pressure-increasing valve must replace this. Reference: http://www.fordonsmaterial.se |
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| The asker has declined this answer Comment: I have seen the word "predominance" used in this context but, on balance, I have preferred "balance"! Many thanks for your imput | ||
2 hrs confidence:
balance Explanation: I think it's a case of the French (in this case at least) and the "AngloSaxons" looking at the same thing from different angles. In English, we talk of BALANCE in respect of the braking of truck and trailer combinations. This does not mean that braking forces are the same on all axles, but that ALL the wheels will, if it comes to that point, lock up at the same time - precisely because the braking force on some wheels is greater or lesser than on others because the weights on those wheels are different (amounts to what the French call "predominance" here). Given that any English speaker familiar with trucking will understand this, it seems to be you can simply replace the Fr. "prédominance" with the Eng. "balance". It looks like a contradiction, but is not. They are two sides of the same coin. In fact, it is (or should be) even more complex than your article suggests, for the brake balance should be ajusted not just to suit the rig, but also to suit the loading of the trailer. Since Formula 1 racing cars allow drivers to adjust brake balance at any time, while driving, and not just from front to back but also from left to right, etc., I imagine any semi-trailer rig these days worth its salt has the same (longitudinal) facility. For ideal braking, brakes should be balanced so that all wheels lock up at the same input (pedal application) level. In such a case, the maximum deceleration can be achieved because all of the tires are utilizing the full braking traction forces available. If an axle is over braked, it will lock before the others and stability will be lost before maximum braking is achieved. Unfortunately, most U.S. trucks are over braked on the drive and trailer axles when the vehicles are empty since brakes are designed to be balanced at the full load condition. Over-braking at the drive and trailer axles is even worse if the front brakes are backed off, limited, or removed. Unfortunately, this is common practice among some users/drivers [http://www.linkrad.com/anatomy.htm] "I can't emphasise too much the importance of balanced brakes on the truck and the trailer and the balance is influenced by both the brake mechanisms used, and the friction material." [http://www.mvria.nsw.gov.au/motorists/mot_sel_brakes.htm] Load placement and security are key factors in many stability-related crashes. Drivers must make sure there is enough weight over all axles to provide adequate brake balance. The load should be distributed evenly across the vehicle (Figure 11). When offloading freight, it’s important to consider redistributing the remaining cargo … Trailer swing happens when the semi-trailer wheels or rear wheels in a full trailer lock up under braking before the axles on the prime mover or front of the trailer. The trailer’s rear swings out of line and tries to “catch up” to the front. The main causes of these situations are: • poor brake balance • poor load distribution • harsh braking • incompatible truck-trailer configurations [www.ltsa.govt.nz/publications/ docs/heavy-vehicle-guide.pdf] |
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