摘要:
A diesel engine for a vehicle comprises an engine body mounted in the vehicle having a plurality of cylinders that is supplied with fuel, a plurality of fuel injection valves for directly injecting the fuel into the cylinders, and an injection control module for controlling a mode of injecting the fuel into the cylinders through the fuel injection valves. The injection control module sets a fuel injection amount per cylinder at least according to a load on the engine body, performs a main injection, and performs at least one pre-injection where fuel is injected prior to the main injection. The injection control module further executes a cylinder-cutoff operation mode where the fuel supplies to the cylinder or the cylinders are stopped when the engine body is under a low load condition where the fuel injection amount per cylinder is below a predetermined amount.
摘要:
There is provided a method for fueling a diesel engine having a particulate filter in its exhaust system. The method comprises supplying a main fuel injection to generate a desired torque. It also comprises additionally supplying a first post fuel injection after the main fuel injection and a second post fuel injection after the first post fuel injection during a higher engine load condition. The method further comprises continuing to supply the main fuel injection and the first post fuel injection and stopping to supply the second post fuel injection during a lower engine load condition, if a vehicle cruise control is performed. Therefore, a noticeable torque disturbance can be eliminated.
摘要:
According to the invention, an EGR control apparatus of an engine includes intake ports to which an intake passage is connected, the intake ports opening into each combustion chamber of the engine, an EGR port to which an EGR passage branching out from an exhaust passage is connected, the EGR port opening into each combustion chamber of the engine, an electrically-operated compressor disposed in the EGR passage for regulating pressure at which EGR gas is introduced into each combustion chamber, and an EGR control valve disposed in the EGR passage at a point downstream of the electrically-operated compressor for controlling the amount of EGR gas introduced into each combustion chamber. The EGR passage branches out from the exhaust passage at a point downstream of an emission control device disposed in the exhaust passage.
摘要:
The process for producing an oleaginous composition of the present invention comprises transesterifying a fat containing a large amount of polybasic unsaturated fatty acid(s) as constituting fatty acid(s) with saturated fatty acid(s) and/or saturated fatty acid alcohol ester(s) with the use of a lipase having an site-specificity to thereby give symmetric triglyceride(s) wherein the fatty acid groups at the 1- and 3-positions are selectively transesterified and a polybasic unsaturated fatty acid group is present at the 2-position. The above transesterification should be carried out under such conditions as to give an oleaginous composition which comprises 40% or more of symmetric triglyceride(s) each having a polybasic unsaturated fatty acid group at the 2-position and 50% or more of completely saturated fatty acid(s) each having 16 or more carbon atoms.
摘要:
An oil pressure control apparatus for a valve driving system for an internal combustion engine, in which a main oil supply passage feeds oil to a hydraulic actuator of the engine valve driving apparatus. A control valve is provided for closing the oil supply passage. A bypass oil passage bypasses the control valve continuously. The control valve, when closed, regulates the oil pressure to below a predetermined value and the oil pressure is insufficient to actuate the hydraulic actuator. When the control valve is opened, responsive to an engine operating condition such as engine speed, oil pressure is above the predetermined value, and the hydraulic actuator is actuated rapidly to shift the valve driving system from low speed to high speed operation.
摘要:
A magenta toner includes a binder resin containing a polyester resin having a dodecenylsuccinic acid structure as a constituent unit, and a solid solution of C.I. Pigment Violet 19 and C.I. Pigment Red 122, the magenta toner having an amount of the solid solution of from 2% by mass to 30% by mass based on the total mass of the toner.
摘要:
A diesel engine control system and control method capable of conducting accurate fuel injection unaffected by variations in injector performance caused by differences among individual injectors or change with aging. The diesel engine control system includes an injector for directly injecting fuel into a combustion chamber of a diesel engine, injection quantity controller for controlling fuel injection quantity by varying a period of electric current supply to the injector, estimator for estimating that an electric current supply period when a prescribed (stable) combustion state is obtained is the current supply period for injecting the amount of fuel required for the prescribed combustion state, and control data correcting device for correcting control data of the injection quantity controller based on the estimated current supply period.
摘要:
A valve driving system for an internal combustion engine having two intake valves and/or two exhaust valves for each cylinder, which includes a cam shaft formed with a pair of low speed cams and a high speed cam located at substantially the center part of the cam shaft, a pair of first rocker arms driven by the low speed cams respectively, each having a portion engaged with one of the valves, second rocker arms driven by the high speed cam and located between the first rocker arms, two oil pressure chambers formed in the second rocker arm and facing the respective first rocker arms, two plungers, each being provided in one of the oil chambers, two bores each being formed engageably with one of the plungers in one of the first rocker arms, an oil passage formed in the second rocker arm and communicated with both oil pressure chambers, and a control valve for controlling oil pressure fed to the oil passage in accordance with the engine operating condition.
摘要:
A valve driving system for an internal combustion engine having two intake valves and/or two exhaust valves for each cylinder, which includes a cam shaft formed with a pair of low speed cams and a high speed cam located at substantially the center part of the cam shaft, a pair of first rocker arms driven by the low speed cams respectively, each having a portion engaged with one of the valves, second rocker arms driven by the high speed cam and located between the first rocker arms, two oil pressure chambers formed in the second rocker arm and facing the respective first rocker arms, two plungers, each being provided in one of the oil chambers, two bores each being formed engageably with one of the plungers in one of the first rocker arms, an oil passage formed in the second rocker arm and communicated with both oil pressure chambers, and a control valve for controlling oil pressure fed to the oil passage in accordance with the engine operating condition.
摘要:
A content copying apparatus includes a flash memory. The flash memory stores attribute information for contents copied to a DVD, out of a plurality of contents recorded on a hard disk (HD). A deletion supporting screen based on such attribute information is displayed on a TV monitor. An operator determines through this screen whether or not each of the copied contents is necessary and, if none of the copied contents are necessary, performs an operation of collectively deleting all the copied contents. In response to this operation, a CPU issues to an HD drive an instruction for collectively deleting all the copied contents from the HD.