Patent ID: 8646255

Claim:
An exhaust gas purification system for an engineering machine, comprising: a filter disposed in an exhaust line of a diesel engine to trap particulate matter contained in exhaust gases; a regenerating device for regenerating the filter by burning the particulate matter deposited thereon; means for presetting a work pause time for the engineering machine; means for notifying that the engineering machine has entered a work pause state; and regeneration control means used for operating the regenerating device for the preset work pause time when notified that the engineering machine has entered the work pause state, wherein the regeneration control means calculates a time required for the regenerating device to burn off a current amount of particulate matter deposited on the filter, and wherein the regeneration control means activates the regenerating device when the fact that the engineering machine has entered the work pause state is notified and the calculated time is longer than the preset work pause time.