摘要:
A light-emitting element is mounted in a cup-like portion formed on a substrate and a case. The cup-like portion is filled with a sealing member made of a light-transmissible resin. A layer made of a material having a refractive index lower than that of the sealing member is provided between the sealing member and a surface of the case.
摘要:
An engine stopping/starting control unit having improved accelerating performance. A charging limiting device is provided which limits the charge provided to a generator when the vehicle is stopped. The decreased charging allows for better performance when the vehicle accelerates from a stopped states. Also, the vehicle headlight can be dimmed while the vehicle is stopped, which reduces the load on the generator. An acceleration detector detects when the vehicle accelerates during running, and can decrease the generator load in response to the acceleration.
摘要:
To provide a battery rental system that is extremely convenient and economical, and that is always stable. The battery rental system includes unmanned automatic battery rental stations, a communication system, a central processing station, electrically assisted bicycle batteries, and ID cards. A user merely inserts the ID card into the battery rental system and the central processing station automatically charges the user for removing a battery from the battery rental system.
摘要:
A control apparatus of an electric vehicle for effectively limiting the operation of the vehicle when it is determined that a driver of the electric vehicle is not sitting in the seat and an accelerator opening of the electric vehicle is in a position corresponding to a minimum value. A motor driving enablement circuit generates a motor driving command which selectively limits operation of the electric vehicle in accordance with these determinations. In addition, when a state in which the driver is not occupying the seat continues for a period of time exceeding a predetermined value, a motor halt controller issues a motor halt command for halting a motor of the electric vehicle. Based on the motor driving enablement command and the motor halt command, a power supply controller controls the supply of power to the motor of the electric vehicle.
摘要:
A sensor voltage reading circuit for reading an analog sensor value is provided which can remove electromagnetic wave noise inputted to an input terminal of an A/D conversion circuit. The sensor voltage reading circuit includes a first voltage division circuit and a second voltage division circuit for dividing the output voltage of a potentiometer. An A/D conversion circuit has input terminals connected to the output terminals of the voltage division circuits and a processing unit for reading digital voltages obtained by conversion of the A/D conversion circuit. The processing unit removes from the converted voltages a noise voltage caused by radio waves which mix into the input terminals of the A/D conversion circuit. Accordingly, the reading accuracy of the output voltage of the sensor can be enhanced. In a further embodiment, the sensor voltage reading circuit can suppress power dissipation by the analog sensor to achieve miniaturization of the power source circuit.
摘要:
The present invention provides an impact resistant Fresnel lens comprising a resin which is obtained by polymerizing a solution consisting essentially of (a) 100 parts by weight of a monomer mixture comprising an styrenic monomer in an amount of from 60 to 99 parts by weight and a (meth)acrylic monomer of from 1 to 40 parts by weight, and (b) 1 to 50 parts by weight of a styrene-dienic copolymer based on 100 parts by weight of said monomer mixture based on 100 parts by weight of said monomer mixture. The Fresnel lens has a high refractive index and excellent transparency and impact resistance.
摘要:
A styrene resin composition comprising a crosslinked styrene resin and uniformly dispersed therein an uncrosslinked resin capable of being extracted with an organic solvent, the amount of the uncrosslinked resin being from 3 to 50% by weight based on the total amount of the composition; and a method of producing a molding of a styrene resin composition, which method comprises the step of subjecting to cast polymerization a liquid mixture comprising: (a) a styrene monomer in an amount of 30% by weight or more based on the total amount of the ingredients (a), (b), and (c); (b) a monofunctional monomer having one radical-polymerizable double bond in the molecule, in an amount less than 70% by weight based on the total amount of the ingredients (a), (b), and (c); (c) a polyfunctional monomer having at least two radical-polymerizable double bonds in the molecule, in an amount of from 0.01 to 40% by weight based on the total amount of the ingredients (a), (b), and (c); (d) a resin component soluble in a mixture of the ingredients (a), (b), and (c), in an amount of from 3 to 100 parts by weight per 100 parts by weight of the total amount of the ingredients (a), (b), and (c); and (e) a free-radical polymerization initiator in an amount of from 0.001 to 5 parts by weight per 100 parts by weight of the total amount of the ingredients (a), (b), (c), and (d).
摘要:
A regenerative braking system in a motor vehicle determines a state of deceleration on the basis of the number of revolutions of a motor and an accelerator signal and performs a regenerative braking according to the state of deceleration. The regenerative braking system includes a revolution sensor for detecting;the number of revolutions of a rotor of a vehicle driving motor and an accelerator opening sensor in a RAM stores discrimination data for discriminating between a regenerative braking mode and a drive mode on the basis of the number of revolutions of the rotor and the accelerator opening and also stores on-off duty ratio data of FETs in the regenerative braking mode and that in the drive mode. A CPU retrieves on-off duty ratio data corresponding to the number of revolutions of the rotor and the accelerator opening in the regenerative braking mode when the regenerative braking mode is determined on the basis of the rotor revolutions and the accelerator opening, and controls the FETs at an on-off duty ratio corresponding to the retrieved on-off duty ratio data. The power unit for the motor vehicle is an electric motor mounted in unit cases using at least a portion of the unit cases as a motor case. In the power unit of such construction, a heat sink is attached to the motor case. Switching elements are provided for controlling an electric current to be supplied to the electric motor. The switching elements are mounted to the heat sink.
摘要:
In a method and apparatus for displaying a residual electric charge for a battery of an electrically driven vehicle, the battery's capacity is detected after the battery is charged. This information is utilized by a residual electric charge meter to indicate a fully charged state of the battery. As the battery begins to supply current to the electric loads, dissipated power is calculated from the product of the value of the current and the length of time during which the current has been supplied. This calculated dissipated power is subtracted from the fully charged capacity from time to time in order to derive the residual electric charge. The battery residual electric charge meter is driven in accordance with the derived value to indicate a current residual electric charge. As such, the battery residual electric charge meter displays values which depend upon the actual fully charged capacity and a residual charge.
摘要:
An engine control device is provided for reducing the retrieving time of control data from sensors at high and low engine speeds. Control parameters from the sensors are converted into memory access parameters to a control map to recover the desired injection amount. The fuel injection quantity is calculated by retrieving fuel injection amounts using the memory access parameters as addresses and performing a four-point interpolation of the memory parameters. A previously retrieved value is used as a reference value to aid the determination of an updated memory access parameter so that the retrieving time can be reduced for high and low engine speeds.