2.1.2. Mechanism of change of phases of a gazoraspredeleniye

Fig. 2.29. Chart of the mechanism of phases of a gazoraspredeleniye: 1–torque; 2–speed of the engine; 3–it is not enough and the sredneoborotny engine; 4–high-speed engine; 5–the engine with the mechanism of change of phases of a gazoraspredeleniye

The mechanism of change of phases of a gazoraspredeleniye provides the optimum moment of opening and closing of valves according to operating conditions of the engine by continuous change of phases of a cam-shaft of a drive of inlet valves and a cranked shaft (fig. 2.29).

Fig. 2.30. The chart of change of phases of a gazoraspredeleniye at various ranges of operation of the engine: 1–loading; 2–frequency of rotation of the engine; 3–idling range; 4–range of small loadings; 5–range of average loadings; 6–range of big loadings of small and average speeds; 7–range of big loadings and high speeds; 8–work at full loading