## 3 Results and Discussion
The rightmost limits of the curves \(P=P(\varphi)\) along the axis \(\varphi\) at various values of \(r\) in Figure 12 are determined by the maximum values of \(\varphi\) in the graphical patterns \(\varphi=\varphi(t)\) in Figure 10. The curves \(P=P(\varphi)\) end at those points that correspond to the limit values \(\varphi_{l}\)-arcsin\((k_{2}/r)\) of the rotation angle \(\varphi\). Likewise, the right borders of the curves \(P=P(\varphi)\) in Figure 13 are determined by the maximum values of rotational speed \(\dot{\varphi}\), and the left borders by the minimum values \(\dot{\varphi}_{l}<0\) in Figure 5:0 The sections \(P=P(\varphi)\) in Figure 12, where there is a \"decrease\" of \(\varphi\) along the abscissa axis, correspond to the sections of the dependences \(\varphi=\varphi(t)\) in Figure 10 after the maximum values of \(\varphi_{\max}\). The limit value of the shaft angle of a nonideal engine is \(\varphi_{l}\)-arcsin\((k_{2}/\rho)\). The value is \(1/\rho\)-\(0.6\cdot 10^{-3}\div 10^{-3}\). Therefore, the lines \(\varphi(t)\) that correspond to the values of \(\rho\) are positioned so densely (Figure 14), that, at the end of the oscillating and aperiodic damped oscillation, they merge into a single line and \(\dot{\varphi}\to 0\). Dense placement of lines of dependence of \(\dot{\varphi}=\dot{\varphi}(t)\) at various values of fluid density \(\rho\) is also observed in Figure 5:1 It follows from Formula (27) that \(P\)-\(\varphi\dot{\varphi}^{3}\sin^{3}\varphi\). The general character of the dependence \(P=P(\varphi)\) in Figure 16 is determined by the graph of the periodic function \(\sin^{3}\varphi\), and its amplitude is affected by \(\rho\dot{\varphi}^{3}\). Regardless of the fact that there are dependencies \(\varphi=\varphi(\dot{\varphi})\) and \(\dot{\varphi}=\dot{\varphi}(\rho)\), the density of the fluid \(\rho\) slightly affects the oscillation period of \(P=P(\varphi)\). This effect has been well observed in the graphical relationships \(\varphi=\varphi(t)\) and \(\dot{\varphi}=\dot{\varphi}(t)\) in Figures 14 and 15. It is obvious from graphical dependences \(P=P(\varphi)\) and \(P=P(\dot{\varphi})\) in Figures 16 and 17, that the more the density of fluid, the more force and power will be required for the implementation of technological processes of mixing and whipping. In contrast to similar graphical dependences \(P=P(\varphi)\) and \(P=P(\dot{\varphi})\), the values of abscissas \(\varphi\) and \(\dot{\varphi}\), corresponding to the maximum values of power, with increasing density of fluid remain almost unchanged. This is approximately the same for all curves \(\varphi=\varphi(t)\) and \(\dot{\varphi}=\dot{\varphi}(t)\) at various values of density of fluid in Figures 14 and 15. The maximum values \(\varphi_{\max}=1.25\) rad and \(\dot{\varphi}_{\max}=0.48\) s\({}^{-1}\) determine the rightmost limits of graphical dependences \(P=P(\varphi)\) and \(P=P(\dot{\varphi})\) in Figures 16 and 17, and the limit value of \(\varphi_{l}\approx 1.045\) rad and value \(\dot{\varphi}\approx-0.08\) s\({}^{-1}\) (Figures 14 and 15) for the endpoint graphs. Figure 5:2 Dependence \(P=P(\dot{\varphi})\) for different values of \(r\). Figure 5:3 Dependence \(P=P(\varphi)\) for different values of \(\rho\). Figure 5:4 Dependence \(\varphi=\varphi(t)\) for different values of \(\rho\). The effect of the number of \(n_{2}\) piston holes on \(\varphi=\varphi(t)\) and the dependencies \(\dot{\varphi}=\dot{\varphi}(t)\) is graphically presented in Figures 18 and 19. The greater the number of holes \(n_{2}\), the less the resistance to the movement of the piston and, accordingly, the less the stirring-beating force (27.1) and the initial maximum angle of deflection of the motor shaft. At the rotational speed of the crank \(\dot{\varphi}\to 0\), its angle of rotation \(\varphi\to\arcsin\big{(}k_{2}/\omega_{0}^{2}\big{)}\) (where \(k_{2}=a/J_{m\prime}\)), and, in turn, the value \(\omega_{0}^{2}\) depends on \(n_{2}\) according to Formula (24.2) or (24.3).