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公开(公告)号：EP2450555A4
公开(公告)日：2015-11-18
申请号：EP10845766
申请日：2010-06-11
发明人： IDE KAZUNARI , ENDO HIROYUKI
CPC分类号： F02D41/005 , F02D41/107 , F02D41/1401 , F02D41/1458 , F02D41/18 , F02D2041/0017 , F02D2041/1409 , F02D2041/141 , F02D2200/0406 , F02D2200/0414 , F02D2200/0614 , F02D2200/101 , F02M26/05 , Y02T10/47
摘要： Providing an exhaust gas recirculation control device of an internal combustion engine by which overshoots or undershoots of an EGR control valve can be prevented, and the tracking performance as to target openings as well as the reliability of the device can be enhanced based on simple control logic. An exhaust gas recirculation control device, being provided with: a feedback control unit 51, and a feed-forward control unit 57, wherein the device is provided with: an adder 73 which adds a feed-forward control command signal 57 to a feedback control command signal 65; and a maximum selection function-section 77 which compares an added value obtained by the adder 73 with a feed-forward control command signal 57 or a command signal from an EGR valve maximum opening map, and selects the command signal by which the valve opening of the EGR control valve is brought to a closed side, wherein the command signal by which the valve opening of the EGR control valve is brought to an opened side is not outputted.
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公开(公告)号：EP2444609A4
公开(公告)日：2013-04-17
申请号：EP10845764
申请日：2010-06-11
发明人： YAMADA SATOSHI , ENDO HIROYUKI
IPC分类号： F01N3/02 , F01N3/035 , F02D11/02 , F02D41/02 , F02D41/04 , F02D41/08 , F02D41/40 , F02D45/00 , F04B49/02
CPC分类号： F01N3/035 , B60W10/30 , F01M1/16 , F01N3/023 , F01N2510/065 , F02D41/0235 , F02D41/0245 , F02D41/025 , F02D41/029 , F02D41/047 , F02D41/08 , F02D41/1447 , F02D41/405 , F02D2041/026 , F02D2200/023 , F02D2200/024 , F02D2200/101 , F02D2200/703 , F02D2250/11 , F02M26/05 , F02M26/15 , F04B49/00 , F04B49/022 , Y02T10/26
摘要： An object is to prevent a large quantity of unburned HC components from being released to the outside until a diesel oxidation catalyst reaches an activation temperature after early post-injection. In the present invention, by reducing a throttle opening of a variable throttle mechanism 77 provided in an oil passage 72, or increasing a set value of an oil pressure level detected in an oil pressure sensor 78 provided on the downstream side of the variable throttle mechanism 77, power of an oil circulation pump 74 is increased before a start point t 1 of the early post-injection. With this arrangement, by increasing a load of a diesel engine 10 to increase a temperature rise gradient of exhaust gas at the stage of increasing the temperature of the diesel oxidation catalyst, the unburned HC component released until the diesel oxidation catalyst 50 reaches the activation temperature is reduced.
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公开(公告)号：EP2631442A4
公开(公告)日：2017-12-06
申请号：EP11834121
申请日：2011-08-22
发明人： IKAWA YOSHIKATSU , ENDO HIROYUKI , IDE KAZUNARI , TAKAYANAGI KO
CPC分类号： B01D53/9495 , F01N3/106 , F01N2900/1602 , F02D41/0235 , F02D41/0245 , F02D41/025 , F02D41/029 , F02D41/1401 , F02D41/1446 , F02D41/405 , F02D2041/1409 , F02D2041/141 , F02D2200/0802 , F02D2200/101 , Y02T10/26 , Y02T10/44
摘要： A DPF target temperature setting unit has a temperature increase rate setting portion which sets a temperature increase change rate such that, until a target set temperature at which PM is burnt is reached after the start of late post injection, the temperature increase change rate is reduced in accordance with an increase in temperature or a period of time elapsed since the start of the late post injection, a stepwise temperature increase change rate in the temperature increase rate setting portion includes two stages of a first-stage change rate A and a second-stage change rate B lower than the first-stage change rate, and a target temperature of the DPF temperature is calculated by using the temperature increase rate of the temperature increase rate setting portion.
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