Abstract: A control system and method for a multi-fuel generator engine are mainly applied to multi-fuel generator products. The control system comprises a controller, a first signal input terminal, a second signal input terminal, a third signal input terminal, and an output terminal connected to an ignition device of a generator engine. When the third signal input terminal of the controller receives a generator engine start signal and either the first signal input terminal or the second signal input terminal receives a signal corresponding to an on state of the corresponding valve assembly, the controller controls the ignition device to ignite. According to control system and method, the controller detects signals corresponding to the states of the two fuel valve assemblies to determine whether or not fuels are normally supplied, so that operating instabilities or faults caused by synchronous supply of two fuels to the generator engine are avoided.

Abstract: A control system and method for a multi-fuel generator engine are mainly applied to multi-fuel generator products. The control system comprises a controller, a first signal input terminal, a second signal input terminal, a third signal input terminal, and an output terminal connected to an ignition device of a generator engine. When the third signal input terminal of the controller receives a generator engine start signal and either the first signal input terminal or the second signal input terminal receives a signal corresponding to an on state of the corresponding valve assembly, the controller controls the ignition device to ignite. According to control system and method, the controller detects signals corresponding to the states of the two fuel valve assemblies to determine whether or not fuels are normally supplied, so that operating instabilities or faults caused by synchronous supply of two fuels to the generator engine are avoided.

Abstract: The disclosure discloses a cutterhead assembly of a branch grinder, including a cutterhead body, a center shaft disposed in a center of the cutterhead body and at least two installing shafts circumferentially distributed by using the center shaft as an axis, each of the at least two installing shafts is successively provided with a limiting plate, a first blade, a first bush, a second blade and a second bush from top to bottom, the first blade and the second blade are in clearance fit with a corresponding installing shaft in the at least two installing shafts, a center of the limiting plate is positioned at an upper end of the center shaft and a gap is kept between the limiting plate and an upper end of the first blade, an outer end of the limiting plate is stretched into the installing shafts and fixed, through the above installation, the first blade and the second blade can be completely rotated in 360 degrees relative to the installing shafts, in a circumferential rotating process of the blade, shredded wo