Mitsubishi Denki Kabushiki Kaisha

Precision Fukuhara Works, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Hiroyuki Ueda

Toshiro Izumi

Satoshi Yamada

Yasuhiro Tanaka

Tatsuo Ishiguro

Takafumi Tanaka

Takashi Furui

Masatoshi Sawazaki

Shintaro Shuto

Hiromi Komatsu

Hisae Terashima

A diesel engine is provided with an EGR line Gconfigured to recirculate a portion of exhaust gas, discharged from an engine body, to the engine bodyas combustion gas, an EGR coolerprovided in the EGR line Gand configured to cool exhaust gas by coolant, a coolant supply device configured to supply coolant to the EGR cooler, and a control deviceconfigured to activate the coolant supply device when the engine bodyis in operation and a temperature of the engine bodyis lower or equal to a preset prescribed temperature.

Diesel engine

An exhaust gas recirculation apparatus includes: a fresh air throttle portion that continues from a fresh air inlet portion and is configured to throttle the flow of fresh air; an inner side tube portion that continues from the fresh air throttle portion, has a tubular shape and has an opening end disposed on a side opposite to the fresh air throttle portion; an exhaust gas inlet portion configured to receive a flow of exhaust gas; a surrounding portion that continues from the exhaust gas inlet portion, surrounds the inner side tube portion, and defines a circumference direction flow path for the exhaust gas extending along an outer circumference surface of the inner side tube portion; and an outlet portion that continues from the surrounding portion, has a tubular shape, and defines a merging flow path configured to receive the flow of the fresh air flowing out from the opening end of the inner side tube portion and the flow of the exhaust gas flowing out from the circumference direction flow path. An annular opening is defined between the opening end of the inner side tube portion and the surrounding portion, the annular opening extending along the opening end of the inner side tube portion and connecting the circumference direction flow path and the merging flow path.

Exhaust gas recirculation apparatus and engine system including such exhaust gas recirculation apparatus

A phase error signal indicating a most recent phase difference between an input clock signal and a feed-back signal is produced in a phase comparing unit. Also, the phase difference of the phase error signal is monitored in an abnormal condition detecting unit. When the phase difference is higher than a threshold value, the abnormal condition detecting unit judges that the input clock signal is set in an abnormal condition, and a frequency-controlled clock signal is produced in the voltage controlled oscillator according to the phase error signal. Therefore, the oscillation clock signal can be output without changing a phase of the oscillation clock signal while suppressing wonders or jitters.

Phase-locked loop circuit

A discharging lamp lighting apparatus is provided to perform lighting control of high voltage discharging lamps such as high pressure sodium lamp or metal halide lamp. In the discharging lamp lighting apparatus, a control section determines a power control pattern balancing with stored discharging lamp stable voltage so as to perform power control of the discharging lamp according to the pattern. If no voltage is stored, the control section performs the power control according to a power control pattern balancing with the minimum rated voltage of the discharging lamp. Then, it is possible to store the voltage when the discharging lamp is stabilized. If the discharging lamp is exchanged, the control section erases contents in stable voltage storing means so as to perform the lighting control of the discharging lamp from an initial state. As a result, the discharging lamp lighting apparatus can continuously perform the lighting control with the optimal rise characteristic of the amount of light even if characteristics of the discharging lamp may be varied due to, for example, degradation thereof.

Discharging lamp lighting apparatus having optimal lighting control

An electronic system for activating a vehicle rider protection apparatus capable of preventing the erroneous activation caused by the failure or malfunctioning of the triggering circuit in the system. An acceleration sensor produces a vehicle acceleration signal, and it is processed independently by a digital signal processor and analog signal processing circuits, which produce trigger signals S.sub.A, S.sub.B and S.sub.D on detecting a collision of the vehicle. An OR gate takes logical sum of the signals S.sub.A and S.sub.B, and produces a trigger signal S.sub.C. An AND gate takes logical product of the signals S.sub.C and S.sub.D, and produces a final trigger signal S.sub.E. In response to the final trigger signal S.sub.E, a current is supplied to a squib, which then ignites and activates the vehicle rider protection apparatus. A diagnostic circuit applies a test signal to the analog signal processing circuits, and tests the operation of the circuits by analyzing the outputs of the circuits.

Electronic system for activating a vehicle rider protection apparatus

An air ejection nozzle located above the sinker dial and needle cylinder of the machine blows fiber waste from the needle groove of the needle cylinder and toward a fiber waste collection box located below the sinker dial. The fiber waste within the box is collected by a member movable within the box by the sinker dial, and is removed from the box by a suction nozzle communicating with an outlet opening of the box.

Remover of dust of flocks, etc. in circular knitting machine

A yarn changing apparatus for a multi-feed circular knitting machine includes lever arms connected to yarn feeding fingers. Vertically moveable sliders operatively connect to the lever arms and are slidable between raised and lowered positions to move the lever arms and yarn feeding fingers connected thereto, so as to place the yarn feeding fingers into operative and nonoperative positions. Vertically moveable rocking jacks pivotably connect to the sliders with each rocking jack including pivotably moveable upper and lower ends. Remotely programmed selection units are operative with the rocking jacks for aiding in pivoting the rocking jacks. The remotely programmed selection unit includes upper and lower electromagnetic block units which are energizable and act upon selectors to engage and pivot the rocking jacks. Raising and lowering cams engage the rocking jacks to raise and lower the rocking jacks during pivoting movement thereof so as to raise and lower the sliders and move the lever arms and yarn feeding fingers connected thereto between operative and nonoperative positions.

Yarn changing apparatus for circular knitting machine

The lint removing apparatus of the present invention is provided with at least one air jet ejecting pipe which is supported for rotation in a circular path of travel so that air is directed over and against selected portions of the knitting machine. Means is provided for supporting the air ejection pipe for rotation and drive means interconnects the rotary needle cylinder with the air ejecting pipe for rotating the air ejecting pipe in the same direction as the needle cylinder and at a decreased speed relative to the rotational speed of the rotary needle cylinder. The drive means includes a planetary gear system including a plurality of bevel gears and a bearing housing supporting the bevel gears. The bearing housing includes a lower rotatable body tube and an upper nonrotating cap.

Growing community of inventors

Hyogo, Japan

Hiroyuki Ueda