| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sense of incompatibility following a regeneration control from being imparted by changing an operation state of an internal combustion engine by a regeneration means, emitting purifying capacity lowered materials stored in a catalyst device and regenerating purifying capacity of the catalyst device. SOLUTION: When an engine is in an operation except a lean operation and is not in a regeneration standby state, both of lamps 31, 32 are made turned off states. When the engine becomes a lean operation state, a lean operation display lamp 31 is turned on in green. When the engine becomes the regeneration standby state, a regeneration display lamp 32 is turned on in yellow. During a regeneration control by low and high speed temperature rising modes, the regeneration display lamp 32 is gently and quickly flickered in the yellow color as it is. In a temperature area in which a catalyst temperature, more particularly, an S component emission is active, a lean operation display lamp 31 is also gently and quickly flickered. When a conversion S regeneration time does not becomes a prescribed value or more after prescribed time elapses after a regeneration control by a high speed temperature rising mode is started, the regeneration display lamp 32 is changed into red and is turned on. |
