摘要:
In in-cylinder fuel multi-injection conducted during forced regeneration of a DPF (12b), control maps for multi-injection are constructed so as to be different for a first gas temperature raising control, which raises a catalyst temperature index temperature (Tg2, Tg1) to a first judgment temperature (Tc1) only by multi-injection, and for a subsequent second exhaust gas temperature raising control, wherein post-injection is conducted in addition to multi-injection to raise a filter temperature index temperature (Tg2) to a second judgment temperature (Tc2). In so doing, exhaust gas flowing into the DPF (12b) can be rapidly raised in temperature when performing forced regeneration of the DPF (12b), thereby shortening the forced regeneration time and improving fuel consumption for forced regeneration.
摘要:
In regeneration control in a manual regeneration mode, when a first exhaust gas temperature of an exhaust gas flowing into an oxidation catalyst device is higher than a predetermined determining temperature and an exhaust gas temperature flowing into a DPF device is higher than a predetermined determining temperature and when an intake temperature becomes higher than a predetermined third determining temperature, second exhaust gas temperature control carrying out post injection in addition to multi injection is stopped and switched to third exhaust gas temperature rise control carrying out the post injection in addition to normal injection. Thus, temperature rise of an engine cooling water can be restricted without stopping an air conditioner, and possible overheating of the engine can be prevented.
摘要:
In regeneration control in a manual regeneration mode, when a first exhaust gas temperature (Tg1) of an exhaust gas flowing into an oxidation catalyst device (12a) is higher than a predetermined determining temperature (Tc1) and an exhaust gas temperature (Tg2) flowing into a DPF device (12b) is higher than a predetermined determining temperature (Tc2) and when an intake temperature (Ta) becomes higher than a predetermined third determining temperature (Tc3), second exhaust gas temperature control carrying out post injection in addition to multi injection is stopped and switched to third exhaust gas temperature rise control carrying out the post injection in addition to normal injection. Thus, in the regeneration control in the manual regeneration mode of a continuous regeneration type DPF device (12) of an engine(10), temperature rise of an engine cooling water can be restricted without stopping an air conditioner, and possible overheat of the engine (10) can be prevented.
摘要:
In in-cylinder fuel multi-injection conducted during forced regeneration of a diesel particulate filter (“DPF”), control maps for multi-injection are constructed so as to be different for a first gas temperature raising control, which raises a catalyst temperature index temperature to a first judgment temperature only by multi-injection, and for a subsequent second exhaust gas temperature raising control, wherein post-injection is conducted in addition to multi-injection to raise a filter temperature index temperature to a second judgment temperature. In so doing, exhaust gas flowing into the DPF can be rapidly raised in temperature when performing forced regeneration of the DPF, thereby shortening the forced regeneration time and improving fuel consumption for forced regeneration.
摘要:
In forced regeneration control of an exhaust gas purification device 12, the number of data for injection control such as the number of meshes of a data map and the number of data maps for multi injection control is decreased while occurrence of torque shock, which is a rapid fluctuation of a generated torque, is avoided. In the forced regeneration control of the exhaust gas purification device 12, when an operation state of an internal combustion engine 10 is a high-load operation state, the normal injection control by stopping the multi injection is carried out and according to a rotation speed Ne and a load Q of the internal combustion engine 10, a region for control is divided into a multi-injection control region Rm, a transition region Rt, and a normal injection control region Rn, and in the transition region Rt, data Ft(i) for injection control obtained by interpolation of data Fml(i) for injection control on the multi-injection control region Rm side and data Fnl(i) for injection control on the normal injection control region Rn side is used.
摘要:
In forced regeneration control of an exhaust gas purification device a number of data for injection control, such as a number of meshes of a data map and a number of data maps for multi injection control, is decreased while occurrence of torque shock, which is a rapid fluctuation of a generated torque, is avoided. In this forced regeneration control, when an operation state of an internal combustion engine is a high-load operation state, the normal injection control by stopping the multi injection is carried out and, according to a rotation speed and a load of the internal combustion engine, a region for control is divided into a multi-injection control region, a transition region, and a normal injection control region. In the transition region, data for injection control obtained by interpolation of data for injection control on the multi-injection control region side and data for injection control on the normal injection control region side is used.
摘要:
A floor-standing air-conditioning apparatus includes a lower air inlet, an air outlet having an air outlet opening, a heat exchanger that is provided in the body, a crossflow fan that is provided in the body and produces a flow of air in which the air that has flowed into the body passes through the heat exchanger and is guided to the air outlet, a drain pan that is provided below the heat exchanger in the height direction of the body. The heat exchanger includes a front heat exchanger and a rear heat exchanger, a pair of which form a V shape with their lower ends being in contact with, or in proximity to, each other, and are arranged so that the crossflow fan is positioned between the front heat exchanger and the rear heat exchanger.
摘要:
There has been a problem of dew condensation, during a cooling operation, on a wind vane or the like provided at an air outlet because the wind speed of blown air leaking from ends in longitudinal direction of the air outlet is low, causing the entanglement of room air. Walls that form an air outlet from which air that has exchanged heat in a heat exchanger is blown are provided. End portions of each of the walls in a longitudinal direction of the air outlet have respective recesses such that a passage of the air therein is made wider than in a central portion of the wall. In the longitudinal direction of the air outlet, the recesses each have a downstream-side width that is smaller than an upstream-side width.
摘要:
A cross flow fan including an impeller having at least two rings arranged with intervals in a fan rotation axis O direction and a plurality of blades that are arranged, between correlated rings, with intervals in a circumferential direction of the rings, in which the blade is divided into plural areas in the fan rotation axis O direction, and both ends adjacent to the rings are denoted as the blade-ring proximate sections and the center portion of the blade is denoted as the inter-blade-ring center section. The blade is formed such that the thickness of the inner peripheral blade end of the blade that is the inner peripheral end of the impeller is smaller in the inter-blade-ring center section than in the blade-ring proximate section.
摘要:
Disclosed is a cross flow fan that makes uniform a distribution of wind velocity along an axial direction of the fan at an exit of an air trunk and that lessens chance of separation of an air flow on an inlet side of the fan, and there are thereby provided a cross flow fan that accomplishes a lower input and smaller noise and an air blower and an air conditioner that use the cross flow fan. A cross flow fan being rotatably placed in a horizontally-long air trunk, and including a plurality of annular rings that are substantially parallel to each other and a plurality of blades that are radially interposed between adjacent rings, each having a circular arc cross sectional shape, and a camber angle of the blade is smaller at the ring side than at a center area of the blade between the rings in a longitudinal direction.