Hopefully I can get to where I need to be with that approach. I designed everything as compact as possible, I might need to stretch the bracket. I'm finishing up an adapter to replace the balance bar and I'm focused on the brake pedal being able to exercise the iBooster's full stroke. Power brakes will reduce brake pedal force, but if the brake booster fails the mechanism must still support a two-foot emergency stop. The area above the stock balance bar location is heavily scalloped and would not be sufficiently strong. It's cast aluminum and appears to have been carefully designed with finite-element analysis (FEA) to remove every gram of weight. I would not want to move the linkage up on the Tilton brake pedal. You will also note that both the Jump In and Run Out pressure points are configurable. I don't know if different OEMs flash different default values to the ECU or if it's consistent. That said, I haven't figured out how to control that via CAN bus, so there must be a default value for the fail-safe mode. It appears to be linear with the slope of the line being configurable. The iBooster ratio is set by #2 Boost Ratio show below. Probably not enough to notice, but I think any calculation will make assumptions. The difference on the atmospheric side will vary by 26% between sea level and 8,000 feet and I assume that vacuum will vary depending on what the engine is doing. ![]() I don't think that the amount of boost for vacuum-assisted brakes will be completely consistent because the amount of boost is dependent on the pressure differential between the two sides of the diaphragm, neither of which is constant. I haven't found any documentation on the iBooster, so I'm going to have to try it and see what happens.
0 Comments
Leave a Reply. |