Determination of power and work of forced vibrations when the cylinders are discon-nected in the engine of the wheeled vehicle

Abstract

This article presents the results of the power of the forced oscillations of the engine and the energy di-agram for the forced oscillations. Dependences of the imposition of free and forced oscillations for different conditions of coincidence of relative frequency on the magnitude of the power were obtained. The transient processes under forced oscillations are considered. The need to improve the torque uniformity during cylin-der shutdown requires an impact on the performance of the individual cylinders. To find a common solution, you need to add expressions for free oscillations, that is, a general solution of a homogeneous equation.
In this work it is also possible to distinguish active and reactive components. Active work increases linearly over time, while jet work is a periodic function of time. Along with the external disturbing force, the internal forces of the oscillatory system also work. The work of the moment of inertia is equal to the kinetic energy of the mass, and the work of the restoring force is equal to the potential energy of the stressed spring. In periodic motions, both these jobs also change periodically and, having different signs, are excluded from the total energy balance of the system, if their value is calculated for one complete oscillation.
The ratio of additional energy consumption caused by the compression of the working cylinders in the disconnected cylinders to the change of the additional energy consumption of the engine is obtained.
Along with the vibration of the engine, the internal forces of the oscillatory system also perform work. The work of the inertia force is equal to the kinetic energy of the mass, and the work of the renewing force is equal to the potential energy of the stressed motor cushions. In periodic motions, both these jobs also change periodically and, having different signs, are excluded from the total energy balance of the system, if their value is calculated for one complete oscillation. Thus, both works are reactive. Work performed by damping forces for one complete period is not excluded from the overall balance.
Keywords: power, work, forced vibrations, cylinder shutdown, engine, wheeled vehicle, disturbing force.