Patent ID: 7730720
Filing Date: 2010-06-08
Classification: B01D,F01N,F02D,Y02T

Abstract:
1. An exhaust gas purification apparatus regeneration system of an internal combustion engine comprising: a regeneration control execution device for executing regeneration control of regenerating exhaust gas purification ability of an exhaust gas purification apparatus provided in an exhaust passage of the internal combustion engine to purify exhaust gas, by supplying fuel to the exhaust gas purification apparatus; a command device capable of being operated by a driver, for sending a regeneration execution command to the regeneration control execution device to cause it to execute the regeneration control; a notification device for notifying the driver to prompt the driver to send the regeneration execution command to the regeneration control execution device through the command device; a regeneration fuel quantity estimation device for estimating a regeneration fuel quantity defined as a quantity of fuel needed to regenerate the exhaust gas purification ability of the exhaust gas purification apparatus to a regeneration termination level by executing the regeneration control by the regeneration control execution device; and an automatic start device for starting execution of the regeneration control by regeneration control execution device even in the absence of the regeneration execution command from the command device if the operation state of the internal combustion engine is an automatic regeneration practicable operation state when the exhaust gas purification ability of the exhaust gas purification apparatus decreases to an automatic regeneration start level that is higher than the notification start level, wherein time of notification by the notification device is controlled so that it is prevented that the regeneration execution command is sent to the regeneration control execution device by the command device while notification is given to the driver by the notification device and the quantity of remaining fuel becomes equal to or lower than a specified remaining quantity during execution of the regeneration control executed in response to the regeneration execution command, wherein when the remaining fuel quantity is smaller than the sum of the regeneration fuel quantity estimated by the regeneration fuel quantity estimation device and the specified quantity, the notification by the notification device is disabled, wherein if the remaining fuel quantity is larger than the sum of the regeneration fuel quantity estimated by the regeneration fuel quantity estimation device and the specified remaining quantity when the exhaust gas purification ability of the exhaust gas purification apparatus decreases to or below a notification start level, the notification by the notification device is started, and wherein the notification by the notification device is started also when the remaining fuel quantity becomes equal to a quantity obtained by adding a predetermined quantity further to the sum of the regeneration fuel quantity estimated by the regeneration fuel estimation device and the specified remaining quantity while the exhaust gas purification ability of the exhaust gas purification apparatus is higher than the notification start level and lower than the automatic regeneration start level.