Abstract: The condensed water processing device determines (S2) whether the pH of condensed water stored in the condensed water tank is smaller than a threshold value (t). When the pH of condensed water is smaller than the threshold value (t), the supply quantity of urea water being supplied to the upstream side of the NOx catalyst is increased (S7) so that the supply quantity is larger than that in normal control (S4) executed when the pH of the condensed water is equal to or more than the threshold value (t).

Abstract: The condensed water processing device determines (S2) whether the pH of condensed water stored in the condensed water tank is smaller than a threshold value (t). When the pH of condensed water is smaller than the threshold value (t), the supply quantity of urea water being supplied to the upstream side of the NOx catalyst is increased (S7) so that the supply quantity is larger than that in normal control (S4) executed when the pH of the condensed water is equal to or more than the threshold value (t).

Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.

Abstract: The condensed water treatment device increases the EGR quantity (S16, S17) so as to be larger than the EGR quantity (Qe) calculated based on the operating state, when within a specific time period (S13) from a moment when execution of filter regeneration control is started to a moment after predetermined time has elapsed following the end of the execution, and also in a case where (S15) the storage water quantity (Qw) of a condensed water tank storing condensed water generated in an EGR cooler is smaller than a normative water quantity (Qwt).

Abstract: The condensed water treatment device obtains (S1) the storage water quantity (QW) of a condensed water tank, and drains (S4) condensed water in the condensed water tank when the storage water quantity (QW) is larger than a threshold value (tu) and also urea water is supplied to an exhaust passage for a selective-reduction type NOx catalyst. Thereby, the condensed water is neutralized and then drained to the outside of an internal combustion engine through the exhaust passage.

Abstract: A condensed water treatment device determines whether a storage water quantity Qw of condensed water generated in an EGR cooler and stored in a condensed water tank is equal to or less than a lower limit t1 (S2). When the storage water quantity Qw is equal to or less than the lower limit t1, the flow rate of the EGR cooler is set to 100% and the flow rate of a bypass passage is set to 0% (S3), whereby supply of condensed water to an internal combustion engine is stopped (S5). Thereby, the condensed water treatment device increases the storage water quantity Qw. While, when the storage water quantity Qw is more than the lower limit t1 and also equal to or more than the upper limit t2, the flow rate of the EGR cooler is set to 0% and the flow rate of the bypass passage is set to 100% (S7), whereby supply of condensed water to the internal combustion engine is executed (S9). Thereby, the condensed water treatment device decreases the storage water quantity Qw.

Abstract: An ECU of a fuel injection controller acquires information on a load of an internal combustion engine including a fuel injection valve. Based on the load information, a switch is made between low-load-condition control, in which a main injection is performed at a timing that avoids a spray injected by a pilot injection that drifts due to a swirl effect, and high-load condition control, in which the main injection is performed at a timing that interferes with (at least partially overlaps) a spray injected by the pilot injection that drifts due to a swirl effect. In the low-load-condition control, the spray injected by a pilot injection is diffused before the occurrence of ignition to reduce smoke. In the high-load condition control, the spray injected by the main injection is caused to interfere with the spray injected by the pilot injection that contains OH radicals, to reduce smoke.

Abstract: An electromagnetic clutch apparatus includes: a rotational shaft rotatable for an input and output of a rotational driving force; a rotor integrally rotated with the rotational shaft about an axis and provided with a plurality of magnetic poles each having a first polarity and a second polarity being different from the first polarity, the first and second polarities of the magnetic poles being arranged alternately along a circumferential direction of the rotor; an armature supported to be rotatable relative to the rotor; a rotational member rotated for the one of the input and output of the rotational driving force relative to the armature; an exciting coil stored in the rotor and generating magnetic flux so that the rotor electromagnetically attracts the armature; and a magnetic flux detecting element arranged to face the magnetic poles along a direction of the axis so as to detect magnetic flux of the magnetic poles.

Abstract: A gear shifting apparatus that automatically performs gear shifting in response to a load is constituted by a small number of components. The gear shifting apparatus includes an output shaft coupled to a carrier of a planetary gear shifting mechanism, an operating ring that rotates relative to a ring gear of the planetary gear shifting mechanism, and a coil spring that biases the ring gear and the operating ring so as to maintain their relative rotational orientations in neutral orientations. The apparatus further includes an operating member that couples the ring gear and the carrier to each other when the relative rotational orientations of the ring gear and the operating ring are the neutral orientations, and fixes the ring gear and allows rotation of the carrier when the relative rotational orientations come off the neutral orientations.

Abstract: An ECU of a fuel injection controller acquires information on a load of an internal combustion engine including a fuel injection valve. Based on the load information, a switch is made between low-load-condition control, in which a main injection is performed at a timing that avoids a spray injected by a pilot injection that drifts due to a swirl effect, and high-load condition control, in which the main injection is performed at a timing that interferes with (at least partially overlaps) a spray injected by the pilot injection that drifts due to a swirl effect. In the low-load-condition control, the spray injected by a pilot injection is diffused before the occurrence of ignition to reduce smoke. In the high-load condition control, the spray injected by the main injection is caused to interfere with the spray injected by the pilot injection that contains OH radicals, to reduce smoke.

Abstract: An object of the present invention is to provide a technology that enables to enhance the effect of decreasing the NOx emission achieved by an exhaust gas purification system as a whole while favorably achieving both reduction in the amount of NOx generated in an internal combustion engine by means of EGR and reduction reaction of NOx in an NOx catalyst even when a reduction process for the NOx catalyst is performed while EGR is being performed. In the invention, in the case where addition of fuel into an exhaust pipe from a fuel addition valve 28 is performed to carry out the reduction process for the NOx catalyst 20 when EGR is being performed mainly by means of a low pressure EGR passage 23, the amount of the exhaust gas passing through the NOx catalyst 20 is decreased by decreasing the amount of the exhaust gas recirculated by the low pressure EGR passage 23.

Abstract: An electromagnetic clutch includes a worm wheel driven by a drive motor, an armature rotated in operative association with the worm wheel, a rotor rotatable about a same axis as the armature, an electromagnetic coil configured to cause the rotor to generate a magnetic force for causing the rotor and the armature to be moved and pulled into contact with each other along the rotational axis by the magnetic force, and an elastic member interposed between the rotor and the armature, one side of the elastic member being fixed to one of the rotor and the armature, the other side of the elastic member being in slidable contact with the other of the rotor and the armature, the elastic member urging the rotor and the armature in directions away from each other.

Abstract: The present invention is directed to an exhaust gas purification system for an internal combustion engine that performs high pressure PM filter regeneration process by decreasing the degree of opening of an exhaust throttle valve in regenerating the particulate matter trapping capacity of a particulate filter and has as an object to provide a technology that enables to perform the high pressure PM filter regeneration process while suppressing excessive temperature rise of the particulate filter even while the vehicle is moving. According to the invention, a prediction is made, when the high pressure PM filter regeneration process is performed, as to whether there is a possibility that the temperature of the particulate filter will reach a predetermined upper limit temperature, and the pressure inside the particulate filter is controlled in accordance with the prediction.

Abstract: An object of the present invention is to provide a technology that enables to enhance the effect of decreasing the NOx emission achieved by an exhaust gas purification system as a whole while favorably achieving both reduction in the amount of NOx generated in an internal combustion engine by means of EGR and reduction reaction of NOx in an NOx catalyst even when a reduction process for the NOx catalyst is performed while EGR is being performed. In the invention, in the case where addition of fuel into an exhaust pipe from a fuel addition valve 28 is performed to carry out the reduction process for the NOx catalyst 20 when EGR is being performed mainly by means of a low pressure EGR passage 23, the amount of the exhaust gas passing through the NOx catalyst 20 is decreased by decreasing the amount of the exhaust gas recirculated by the low pressure EGR passage 23.

Abstract: A valve opening and closing timing control device includes a phase control unit having a drive side rotation member for rotating in synchronization with a crankshaft of an internal combustion engine, a driven side rotation member provided coaxially with the drive side rotation member for rotating in synchronization with a camshaft of the engine and a phase control mechanism for controlling a relative rotational phase between the drive side member and the driven side member by being supplied with an operation fluid. The phase control unit is provided at each set of camshafts of the internal combustion engine having plurality sets of camshafts.

Abstract: An exhaust gas purifying system reliably detects an amount of accumulated particulates, lengthens forced regeneration intervals, and improves fuel efficiency. The exhaust gas purifying system comprises: a particulate filter 22 disposed in an exhaust system of an internal combustion engine 2 and collecting particulates from exhaust gas, and an NO2 generating unit 21 upstream of or in the particulate filter 22; a discharged particulate amount calculating unit A1 calculates an amount Me of discharged particulates on the basis of an excess air ratio ?; a burnt particulate amount calculating unit A2 calculates an amount Mb of burnt particulates on the basis of the temperature of exhaust gas in front of the particulate filter or the temperature of the particulate filter; and a particulate accumulation amount calculating unit calculates an amount Ma of accumulated particulates on the basis of the amount Me of discharged particulates or the amount Mb of burnt particulates.

Abstract: A variable valve timing control apparatus includes: a relative rotational phase adjusting mechanism capable of adjusting a relative rotational phase between a drive-side rotational member and a driven-side rotational member between the most advanced angle phase and the most retarded angle phase; and a lock mechanism capable of locking the relative rotational phase at an intermediate phase between the most advanced angle phase and the most retarded angle phase; a first pump operated by a driving force of an engine; and an electrically driven second pump operated as an electrically driven pump. Hydraulic fluid is supplied from at least one of the first pump and the second pump, and the second pump is capable of operating even if the first pump is inoperative when the engine is not running.

Abstract: In an exhaust gas control apparatus for an internal combustion engine, in a case where an internal combustion engine is in a high load operating state while a PM trapping ability forcible recovery process for a particulate filter is being performed, EGR gas is caused to flow back from a portion downstream of the particulate filter in an exhaust passage to a portion upstream of a compressor housing in an intake passage, whereby the EGR gas is cooled by an intercooler. In a case where the internal combustion engine is in a low load operating state while the PM trapping ability forcible recovery process is being performed, the EGR gas is caused to flow back from the portion downstream of the particulate filter in the exhaust passage to a portion downstream of the intercooler in the intake passage, whereby the EGR gas is prevented from being unnecessarily cooled.

Abstract: The present invention is directed to an exhaust gas purification system for an internal combustion engine that performs high pressure PM filter regeneration process by decreasing the degree of opening of an exhaust throttle valve in regenerating the particulate matter trapping capacity of a particulate filter and has as an object to provide a technology that enables to perform the high pressure PM filter regeneration process while suppressing excessive temperature rise of the particulate filter even while the vehicle is moving. According to the invention, a prediction is made, when the high pressure PM filter regeneration process is performed, as to whether there is a possibility that the temperature of the particulate filter will reach a predetermined upper limit temperature, and the pressure inside the particulate filter is controlled in accordance with the prediction.

Abstract: The present invention has for its problem to be solved to provide a technique in which in an exhaust gas purification system for an internal combustion engine with a filter being arranged on an exhaust passage for trapping PM in an exhaust gas, it is possible to suppress an excessive rise in temperature of the filter during execution of filter regeneration control more preferably. In the present invention, when the amount of intake air in the internal combustion engine decreases up to an amount at which an excessive rise in temperature of the filter might be induced during the execution of filter regeneration control, the oxygen concentration of an ambient atmosphere around the filter is decreased up to a target oxygen concentration.