| 摘要 |
In a method of regulating the delivery of the combustion fluid (i.e. air or mixture of air and fuel) to an internal combustion engine (1), the combustion fluid is conducted through a gas engine or positive displacement device capable of operating as a fluid motor or a fluid compressor (2) which is drivingly coupled with the internal combustion engine, and the flow rate through the device (2) is varied in the sense of the desired load change by means of a control device (3, 23) on the device. The positive displacement device (2) may be operated as a fluid motor and/or as a supercharger. As a fluid motor the work done by the expansion of the combustion gas is used to assist the engine (1), whereas the engine (1) drives the gas engine (2) when operating as a supercharger. In a preferred embodiment the device (2) is of the rotary vane type (FIG. 3) and the rotational speed ratio between the internal combustion engine (1) and the device (2) is fixed, the fluid flow rate being varied by a control device which has a displaceable control edge (22) in the gas inlet region (5) of the device for varying the intake volume and which is moved by an actuating lever (15) linked to the load regulator of the internal combustion engine (1). In the embodiment of FIG. 3, the control device comprises a segment (23) of the casing (19) bounding the working space (20) of the gas engine, the segment being rotatable about the vane axis (11). The control edge (22) is formed by one end of the segment (23), and a further control edge (24) may be formed at its opposite end for operating in the gas outlet region (21) if the engine (2) is required to operate as a supercharger in an upper load range. |
