Abstract: A diesel engine fuel supply control device which supplies mixed oil containing petroleum-based fuel oil and unpurified waste oil to a diesel engine as fuel is configured to regulate the amount of waste oil supplied from a first fuel tank to fuel mixing means and the amount of petroleum-based fuel oil supplied from a second fuel tank to the fuel mixing means by controlling waste oil quantity regulating means and petroleum-based fuel oil quantity regulating means on the basis of a mixing ratio set by mixing ratio setting means of an ECU. This makes it possible to stably operate the diesel engine for an extended period of time and greatly increase the ratio of use of waste oil.

Abstract: A diesel engine fuel supply control device which supplies mixed oil containing petroleum-based fuel oil and unpurified waste oil to a diesel engine as fuel is configured to regulate the amount of waste oil supplied from a first fuel tank to fuel mixing means and the amount of petroleum-based fuel oil supplied from a second fuel tank to the fuel mixing means by controlling waste oil quantity regulating means and petroleum-based fuel oil quantity regulating means on the basis of a mixing ratio set by mixing ratio setting means of an ECU. This makes it possible to stably operate the diesel engine for an extended period of time and greatly increase the ratio of use of waste oil.