BMW Motorrad’s ShiftCam variable valve timing technology seems to be headed to its single-cylinder G 310 lineup.
The 312cc engine has been one of the less impressive parts of BMW’s G 310 single-cylinder model lineup, and the German manufacturer could be set to address this issue with an update soon.
- Recent patent filing shows new ShiftCam single-cylinder engine
- Two different cam profiles for inlet valves
- Likely to feature on G 310 models
A recent patent filing has shown BMW to be working on a ShiftCam system for a single-cylinder engine featuring dual overhead camshafts. The G 310 bikes and the C 400 range of scooters are the only single-cylinder models in BMW’s lineup, but the latter uses a single overhead camshaft, meaning that these patent drawings almost certainly pertain to the G 310 range (unless BMW is developing an all-new single-cylinder engine).
As for the system itself, it uses a solenoid actuator to slide the intake camshaft along its axis, thereby bringing different cam profiles in contact with the inlet valves. There is one cam profile for lower RPMs, which features shorter duration and lower lift, and another cam profile for higher RPMs, with higher lift and longer duration. Only the inlet valves get this variability, with the exhaust valves sticking with the same timing, duration and lift throughout the rev range.
There’s no word yet on whether this system is being co-developed by BMW and TVS, with whom it partners for the 310cc models. TVS’ Apache RR 310 has thus far used the same powertrain as the BMW G 310 range, and being a performance-focused bike, it could benefit from the new ShiftCam technology.
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