Flywheels

Flywheels contribute to the uniformity of crankshaft angular velocity during engine idling, especially under asymmetric firing conditions or cold-start scenarios. Low-speed torque delivery in naturally aspirated or emission-restricted engines is prone to high fluctuations, resulting in RPM instability. Flywheels with calibrated inertia values are modeled using time-domain simulations to suppress transient angular acceleration. These flywheels reduce the likelihood of stalling and enable smoother clutch engagement by maintaining rotational momentum through incomplete combustion cycles. 

Flywheels function as the primary mechanical interface between the crankshaft, clutch system, and transmission input. Any deviation in face flatness, bolt circle true position, or pilot concentricity introduces parasitic loads, resulting in premature spline fretting and input shaft misalignment. Each flywheel is machined with parallelism under 10 microns, axial runout less than 0.05 mm, and hub bore tolerances within H7/k6 fits depending on the application. These tolerance parameters are maintained across production batches using real-time CMM verification.