JPS63156426U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 9 relate to embodiments of this invention, Figures 1 and 2 are overall configuration diagrams, respectively, and Figure 3 is a mechanical turbocharger when the mechanical turbocharger is a screw type. Figures 4a and 4b are internal plan views and cross-sectional views of the mechanical supercharger with a built-in bypass passage, and Figures 5a and b are views of the mechanical turbocharger with a built-in bypass passage. Fig. 6 is a plan view of the inside of the mechanical supercharger and a cross-sectional view of the mechanical supercharger, and shows the areas in which supercharging is carried out and not carried out during normal operation, with engine rotation speed and engine output torque as the coordinate axes. Figure 7 is a diagram showing the region in which supercharging is carried out when the exhaust brake is activated, with engine rotational speed and engine output torque as the coordinate axes, and Figure 8 is a diagram at the time of starting, with engine rotational speed and engine output torque as the coordinate axes. FIG. 9 is a diagram showing the implementation area of supercharging to prevent white smoke during operation at low outside temperatures, with engine speed and engine load as the coordinate axes. . 16... Diesel engine main body, 18... Mechanical supercharger, 28... Electromagnetic clutch (supercharging control means), 32... Computer (control signal generating means), 34... Bypass passage, 36, 48... ...Electromagnetic on-off valve (supercharging control means), 42... Bypass passage (supercharging control means), 46... Slide type on-off valve 46 (supercharging control means).

Claims (1)

[Claims for Utility Model Registration] (1) A mechanical supercharger that is driven by power from an engine to supercharge the engine, and controls whether or not the mechanical supercharger performs supercharging. 1. A control device for a mechanical supercharger, comprising: supercharging control means for controlling the supercharging control means; and control signal generation means for sending a control signal to the supercharging control means based on operating parameters of a vehicle. (2) The utility model according to claim 1, wherein the operating parameter is the operating state of the exhaust brake, and during the operating period of the exhaust brake, supercharging is performed by the mechanical supercharger. Mechanical supercharger. (3) The scope of the utility model registration claim, characterized in that the operating parameters are outside temperature and engine load, and during periods when the outside temperature is low and the engine load is low, supercharging is carried out by the mechanical supercharger. The mechanical supercharger described in paragraph 1. (4) Utility model registration claims 1 to 4, characterized in that the supercharging control means is an electromagnetic clutch provided in an engine power transmission path from the engine to the mechanical supercharger. Mechanical supercharger (5) according to any one of Item 3, wherein the supercharging control means includes a bypass passage connected in parallel to an intake passage portion in which the mechanical supercharger is provided; A mechanical supercharger according to any one of claims 1 to 3, which is characterized by comprising a valve for opening and closing this bypass passage. (6) The mechanical supercharger according to claim 5, wherein the bypass passage is built into the mechanical supercharger.