For example, in BMW M52TU engines, the throttle body is a hybrid cable/wire setup, where depending on the speed and load of the throttle input, the throttle either operates as a true DBW or handing back control to the cable. This is quite weird an...
For example, in BMW M52TU engines, the throttle body is a hybrid cable/wire setup, where depending on the speed and load of the throttle input, the throttle either operates as a true DBW or handing back control to the cable. This is quite weird and I personally don’t know other throttles that do this. For example, in older Mercedes 4G-Tronic transmissions, roughly 1990 and earlier, there is a secondary fluid pump driven by the transmission output shaft, so theoretically those cars can be bump started in emergency. This is quite weird and I don’t know any other automatic transmission that kept this feature all the way to the 90s. The design was eliminated in later 4G-Tronic units. Basically, I want to hear some other less-than-common automotive engineering quirks, whether it’s a weird setup for variable length intake manifolds (early BMW N62s) or possibly the oldest 4-speed Ravigneaux automatics (Ford FMX to AOD), or even some weird brake / suspension / steering, etc. setup you never seen in any other places. submitted by /u/wunengsnowballoink [link] [comments]