Patent ID: 7080611

Claim:
An engine-driven work machine comprising an engine, a work machine driven by the engine, and electrical components belonging to the work machine, the engine-driven work machine supplying an output for work while being driven by the engine, and comprising: an open air machine accommodating section provided in a main body of the work machine and accommodating the engine and the work machine driven by the engine and a fan capturing cooling air via a ventilation path having an inlet; and a control box for accommodating part of the engine, the electrical components of the work machine, and a fuel tank, the control box being provided above the open air machine accommodating section, and having the ventilation path connecting the fan to the engine, the electrical components and the fuel tank being arranged along the ventilation path, the electrical components generating low heat being provided upstream on the ventilation path, and the engine generating considerable heat being provided downstream on the ventilation path, a cross sectional area of the ventilation path decreasing as a distance from the inlet increases.