Mitsubishi

About: Mitsubishi is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 53115 authors who have published 54821 publications receiving 870150 citations. The organization is also known as: Mitsubishi Group of Companies & Mitsubishi Companies.

Refrigerant circulating system

Abstract: The system uses a non-azeotropic mixture as refrigerant and comprises: a main refrigerant circuit connected by a compressor (1), a four-way valve (2), an outdoor heat-exchanger (3), a first throttling device (4a-c), a plurality of indoor heat-exchangers (5a-c), and a low-pressure receiver (6); a bypass circuit diverging from the discharge portion of the compressor (1) and extending through a composition detecting heat-exchanger (9) and a second throttling device (8) to the low-pressure side; an outdoor fan (7) associated with the outdoor heat-exchanger (3); a first temperature detector (103) to detect refrigerant temperature upstream of the second throttling device (9); a second temperature detector (104) to detect refrigerant temperature downstream of the second throttling device (8); a first pressure detector (102) to detect pressure downstream of the second throttling device (8); a third temperature detector (105a-c) to detect temperature in the main circuit between the first throttling device (4a-c) and the indoor heat-exchangers (5a-c); a fourth temperature detector (106a-c) to detect temperature at the low-pressure side; a second pressure detector (101) to detect the pressure at the high-pressure sides a device (21) for calculating the composition of the mixture refrigerant, a main controller (22) for controlling the speed of the compressor (1) ) and the speed of the fan (7) on the basis of the refrigerant composition and pressure; and a controller (23) for controlling the opening of the first throttling device (4a-c).

Operating method for a hybrid car

Abstract: An operating method for a hybrid car which has an electric motor for driving the vehicle and an internal combustion-engine for power generation. Upon completion of the activation of a catalyst, the engine is operated in warm-up mode with a small throttle valve opening, and when the output of a water temperature gauge thereafter reaches a predetermined value and the warm-up operation is complete, the engine is operated with a large throttle valve opening for the power generation. Thus, the hybrid car can enjoy improved exhaust gas characteristics and increased cruising range and power performances. If it is determined that the storage amount of a battery is smaller than a predetermined storage amount when a starter key is so operated as to stop the vehicle, an alarm lamp is lighted, thus informing the driver of engine operation, and the engine operation is continued until the predetermined battery storage amount is reached or a predetermine time elapses from the start of the engine operation, whereby the battery is reliably charged. Accordingly, the battery can be reliably charged with power necessary to start the vehicle, and the cruising range and power performances of the vehicle are improved.

GaN single crystal

Abstract: A GaN single crystal having a full width at half-maximum of the double-crystal X-ray rocking curve of 5-250 sec and a thickness of not less than 80 μm, a method for producing the GaN single crystal having superior quality and sufficient thickness permitting its use as a substrate and a semiconductor light emitting element having high luminance and high reliability, comprising, as a substrate, the GaN single crystal having superior quality and/or sufficient thickness permitting its use as a substrate.

Braking control system for electric automobile

Abstract: This invention relates to a braking control system for an electric automobile that runs by driving wheels with an electric motor. The braking control system controls braking of a vehicle through regenerative braking by the motor. Upon application of brakes, the braking control system can make combined use of mechanical braking by a mechanical brake system (11) and regenerative braking by a drive motor (2). The braking control system is designed to control regenerative braking of the motor (2) by a regenerative braking control device (12) so that greater braking force is produced when a failure in the mechanical brake system (11) is detected by a failure detection device (22) than when the mechanical brake system (11) is detected to be normal. This has made it possible to stop the vehicle surely by appropriately using regenerative braking in the event of a failure in the mechanical brake system while also making it possible to avoid or reduce an energy loss, which is caused by regenerative braking, when the mechanical brake system is normal.