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Miniature internal combustion engine

18.01.2002

A group of engineers from the Massachusetts Institute of Technology (USA), together with specialists from other universities and companies, is developing a miniature internal combustion engine that can replace batteries and accumulators in the future.

The dime-sized engine operates on the principle of a gas turbine driven by a stream of hot gases. It is capable of generating 20 W of power at a rotor speed of 2,4 million rpm. All the tiny components are made in the same way as computer components, and their production will not require large expenses. When developing the engine, the creators had to overcome numerous technical difficulties associated with the need to ensure acceptable (micron) surface accuracy, as well as the problem of removing a large amount of heat generated by the engine.

The developers are confident that a workable miniature engine will be assembled in two years, but commercial models will appear no earlier than 2010.

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HGST Endurastar J4K320 hard drives for automotive electronics 06.10.2013

HGST (formerly Hitachi Global Storage Technologies, now a subsidiary of Western Digital) announced the delivery of Endurastar J4K320 hard drives. These single platter drives are specifically designed for automotive infotainment and telematics applications. The manufacturer himself refers Endurastar J4K320 to the sixth generation of such devices. The maximum capacity of the drive is 220% larger than its predecessor. It is equal to 320 GB, which is an industry record.

HGST Endurastar J4K320 drives are guaranteed to remain operational at altitudes up to 5500 m, in the temperature range from -30°C to +85°C, during shocks (during operation - impact with acceleration up to 300g for 2 ms, in the off state - up to 800g ). Patented Thermal Fly-height Control (TFC) technology is used to compensate for changes in media-to-head distance caused by changes in temperature and pressure.

The Endurastar J4K320 family includes 320GB, 250GB, 200GB, 100GB and 80GB models. The spindle speed is 4260 rpm. Drives with a thickness of 9,5 mm are made in a standard 2,5-inch form factor and are equipped with a SATA interface.

Deliveries of HDD HGST Endurastar J4K320 have already begun.

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