Category: Engines & Drives Forum

Moin, I thought this morning, why do you still use AGR in diesel engines today? Sure, as an intermediate stage, where you didn’t have any corresponding catalysts with urea injection, AGR was a suitable way to lower the combustion temperature and thus the production of NOx. The associated problems are well known. So why not just leave out and make the whole with a possibly larger SCR Kat and an adapted urea quantity com Do you have any opinions or scientific articles? Thank you. LG Micha

Actually it’s about the TFSI VAG engines. In the instructions it says, you should use 98 octan fuel, but it’s also 95 octan fuel. Does the manufacturer do this, in order not to have to prescribe the unconditional use of 98 fuel, which may make the sale difficult. With the old TT with the 1.8T engine, there were several variants. The smallest had 150 Ps at 0.65 charge and needed only 95 octan, the next 180 hp with 0.8 charge needed 98 octan, the 224 hp also 98m octan . Therefore the conclusion. Do not the TFSI need from house 98 octan, and only the knock control prevents worse. Next conclusion. With chipped TFSI there would not be 98 octan already the lower limit, and with further use of 95 octan even more knocks and uncontrolled combustion and therefore also more turbo damage in Chiptuing. How does the knocking affect the loader ?

A frequently asked question, in the appendix the answer. – mass red. stands for the actually rotating mass of the component – mass red. total including the number, e.g. 4 wheels – mass equalient trans. stands for the assumed mass that the rotating component would correspond to with a partial train mass. A ZMS (two masses flywheel) corresponds e.g. 205 kg – pull total stands for the actual percentage of the rotating components to the total pull force. Here you can see that the large load ms discs (simplified 4x 380 mm assumed) for a translation e.g. first gear with 4. make up only 0.65%.

Good day, after a callback campaign from KBA (technical action battery plus cable) my vehicle had to go to the dealer in order to have an additional battery cable installed there. The description of the KBA: Error in plug connection of the battery plus cable can lead to the failure of the vehicle electrics and the engine. I have my BMW 5 years and never had any problems. One day after the repair at the dealer dealer, my BMW stopped at the first ride out of the underground garage. the description above. How can this be? After a fault diagnosis it probably came out that the exhaust gas return device is defective, new price approx. 200,00 €. Who believes it will be soulful. What would you cause? It is obvious that the problem only came about as a result of the repair. Here there is a safety risk that has arisen, I could no longer steer the vehicle!

Hi, I have a question that everyone probably knows and everyone has their own opinion about it. You should have an engine, if it is cold not run in the stand, because it never gets warm and you destroy it even more so the statements of many. The new RAM 2500 has like many also a remote ignition function, to let the engine run warm. Of course then only in the USA allows for example. How does such a monster diesel behave, if you let it tucker in the stand? Does it just run like any other other cars also only with stationary gas, or does there run a procedure which should bring the engine to operating temperature? According to the Geiger so the engine should be warmed up so that then the same heavy loads can be pulled with its 1175NM. Especially if you want to go off the car again and turn on again, so that all functions are available. I just care whether this as you say does not harm the engine rather. I have no of such huge machines I know I’d only be interested in greeting

Hello men! My T-Reg V8 TDI has made me really happy for 4 years now, until…: A broken control chain tensioner caused loud flapping noises. To the friendly brought diagnosis after engine expansion: New engine!! Because everywhere in the engine room the chips of the broken spanner were traveling. 2 new turbochargers on top of that, because they are also in the oil cycle :curring:?:huh:??? Teurer fun defies culant participation. Here my first important question to you, though too late: he chips can also rinse out or has a motor replacement been the only solution here? Now it comes even thicker! Car get back, m.E. it jerked on different days 2-3 times while driving off, what I did not know, but he drove actually fine again. After about 400 KM at the gas station no more gear goes in, stands on D, but drives no more, as in idle and smells like rubber.???? Let towing, is now for diagnosis with the friendly, vague guess: gear damage!! Now my main question: Did they have something wrong to put together, that he drives a few 100 km, then the gearbox breaks??? Out of the belly, this is connected to the engine repair for me, now worry that I have to pay again…. Thanks for every hint! Best regards, PS friend

Hyundai Tucson JM 2,0 / Gasoline / 2009 / 110,000 km For a few days I’ve heard a mechanical noise (similar to a ratcheting back bearing) as long as the engine hangs on the gas. If you walk away from the gas, the noise is gone. If you turn the engine up in a stand, there’s nothing to hear. Valve drive: Timing belts from crankshaft to outlet camshaft. A control chain connects inlet and outlet camshaft. Alternating interval of the timing belt is not yet reached. (Vehicle has dropped 110,000) or the automatic chain tensioner is slipping, I don’t think, because so far I have only heard control chains rattle when you went off the gas. However, these were all V6 engines that I had. Ideas? Can a turning or tensioning roller of the kerb belt cause such (load-dependent) noises? Or the Lima, servo pump or the climate compressor?

Hi, I’ve already driven a lot of cars with 4 cylinders and I noticed that these just on the highway always give such an annoying roar of itself. Especially at speeds over 4000 bad. I had and have a 3 cylinders in the Fox and find the “running quiet” and volume on the highway much more pleasant, because I don’t have this roar all the time. Rather knatters, but not very loud or disturbing. Is the taste thing, or is that just so with the 3 potters? Sure me n Astra K was totally quiet with his 4 cylinders, but was another price range How do you feel? Greetings

The Berlingo is built in 2006 and has the 1.4 gasoline 140 000km problem I have found: If I delay or brake then you hear a kind of flap. Relatively loud (is in the city bitsl unpleasant). The switch starts to wobble to that too (this has mega play and is tacky). To the sound: Horts like stones in a metal shell. The engine runs great and the clutch grips still well. I’m a little helpless….

Short question for the Master School, can one tell me exactly why the OPF became mandatory later than the DPF? I could not find anything exact, only that the EURO 6c standard for all vehicles became mandatory from 01.09.18. Greeting