Patent ID: 7744503
Filing Date: 2010-06-29
Classification: A01D,F02B,F02D,Y02T,Y10T

Abstract:
1. An engine-driven work machine for driving an implement by an engine, comprising: a target engine speed selection unit for selecting and specifying an arbitrary target engine speed from among a plurality of target engine speeds that are set in a stepwise fashion; and a control unit for electrically controlling opening and closing of a throttle valve of the engine so as to cause an actual engine speed of the engine to conform to the target engine speed specified by the target engine speed selection unit; wherein the target engine speed selection unit is configured to be manually manipulated by an operator of the engine driven working machine for selecting and specifying the arbitrary target engine speed; and wherein the plurality of target engine speeds comprises two target engine speeds that include: a medium target engine speed at which the engine is substantially capable of generating a maximum torque; and a high target engine speed which is higher than the medium target engine speed and at which the engine is substantially capable of generating a maximum output.