PURPOSE:To avoid any excessive enrichment in air fuel ratio and ensure the starting performance of an engine by reducing the quantity of fuel to be injected below the specified value, when pressure of any misfire at the starting time is discriminated after detecting the combustion pressure inside a combustion chamber is detected. CONSTITUTION:If the current crank position is the position at which injection is to be just executed and a starting time is judged from a starter signal or the like, it is determined whether a pressure integrated value PS is over the specified value K1 or not. If the value is below the specified value K1, which constitutes a judgement of misfire and flag 1NJ=1, which means that the preceding injection is carried out it is determined that a fuel injection time integrated value TAUS is over the specified value K2, that is, fuel still remains inside a cylinder. The operation based on the expression TAUS= TAUS-(injection valve open period)gamma is executed to interrupt injection. The interruption is executed until TAUS comes below the lower set limit K3. The air fuel ratio may become a value suitable for the starting and thereafter, the injection of the specified quantity of fuel is restarted, whereby preventing any accident of starting failure.

Fuel injection control method of internal-combustion engine

PURPOSE:To prevent the fluctuation of demagnetizing performance due to the dispersion in time constants by measuring the time when the demagnetizing current of the case of its 1st reversal reaches a specified value and setting the demagnetizing current feeding time on each reversal of after the 2nd time based on this time CONSTITUTION:When a demagnetizing switch is turned ON in order to start the demagnetizing operation of a magnetic chuck, a demagnetizing signal is input to the latch circuit 20 of the demagnetizing operation command circuit 17 inside and the output (B point) thereof becomes a H level At this time, the output (C point) of the flip flop circuit 21 of the time measuring circuit 14 inside becomes H level, so the AND conditions of an AND gate 22 are concluded, the potential of a D point becomes H level, and H signal is transmitted to a polarity reversing circuit and the 1st reversal signal is output to a driver circuit 3 In this case, the time until the demagnetizing current reaches a specified value is measured and the demagnetizing current feeding time on each reversal of the 2nd time and on is set based on time thereof On output of the final reversal signal to a circuit 5 from a demagnetizing current feeding time setting circuit 16 the demagnetizing operation is finished

Demagnetizing method for magnetic chuck and device therefor

PROBLEM TO BE SOLVED: To provide a connection-type exercise roller capable of also being utilized as an individual exercise roller by being separated.SOLUTION: An exercise roller 10 includes two or more exercise sub-roller units 12 and 14. The exercise sub-roller units 12 and 14 can be connected to each other to constitute the single exercise roller 10, and can also be separated to be utilized as individual exercise rollers.

Advanced exercise roller

PROBLEM TO BE SOLVED: To provide a joint rehabilitation tool that has a suitable structure for performing rehabilitation on a shoulder, elbow and hand joints particularly while reducing pain in an elbow joint, shoulder joint, or the like.SOLUTION: While holding the first grip 20 of the joint rehabilitation tool 10 with the left hand and the second grip 30 with the right hand, the left and right hands are rotated in the direction opposite to each other. In other words, the right and left hands are rotated so that the right forearm and the left forearm cross each other at the position near the wrists. Then, the right and left hands are rotated in the opposite direction so that the right forearm and the left forearm are reversed in the front and rear positional relation. Accordingly, the internal and external rotation of the left/right shoulder joints and also adduction and abduction are performed. As the flexion and extension of the elbow joints are also performed as well as the flexion (palmar flexion) and extension (dorsal flexion) of the hand joints, rehabilitation of the shoulder, elbow and hand joints can be performed.

Joint rehabilitation tool

PURPOSE:To position a main spindle in an arbitrary se position located within one full turn of the main spindle by mounting only a one rotation signal detecting mechanism for outputting a signal once each time the main spindle is rotated by one full turn on the main spindle and locating a position and speed detector to a main spindle motor. CONSTITUTION:A main spindle motor is run at a set speed Vo by means of a constant position stop command. The value of a counter to count a pulse generated from a detector to detect the rotation position of the main spindle motor each time a rotation signal is generated once is latched to a latch circuit. When, after the speed of the main spindle motor attains a set speed Vo, a one rotation signal is outputted, values Pc and Pr of the counter and the latch circuit are read, a value (Pc-Pr) is subtracted from a moving amount Po of the one full turn of the main spindle, and a value added by a command stop device Pg is set to an error counter. A main spindle which does not perform control of a position before a position deviation set to the error counter attains T0 is stopped at a set rotation position (a set rotation angle position).

Main spindle positioning system

PURPOSE:In a case where a spark mistake occurs by the adherence of fuel to an ignition plug, to prevent ignition error aftwerward by reducing the quantity of fuel to be supplied CONSTITUTION:When an ignition plug 32 becomes sooty and does not spark, a square signal from an AND circuit 46 is counted by a counter 47 The counter 47 operates a timer 48 in a state of continuous ignition error in which the counted value exceeds a predetermined value, and a display lamp 50 is ignited for predetermined time, a current being flowed to a relay coil 50 Accordingly, when a make contact 52 is closed, a starting switch 20 is short-circuited, and a cranking device 13 operates continuously and assumes an automatic cranking operation state Simultaneoulsy, by the connection of a relay coil 51 to a power source, a breaking contact 53 is opened, and the solenoid 11 is disconnected from the power source to close the electromagnetic valve and cut the supply of fuel to the bypass Consequently, adherence of fuel to the ignition plug electrode is prevented, and adhered fuel is dried

Iijima Tamotsu

Papers

Spark ignition engine