Established in 1980, Hsing Hua Electric Machinery Corp. is an ISO9001-approved specialized maker of electronic, electrical, and electrical machinery parts and accessories for automobile, motorcycle, all-terrain vehicle (ATV), lawnmower, and agricultural-machine engines. The greater part of the firm's products go to a select group of leading international brands, produced on original equipment/ design manufacturing (OEM/ODM) bases.

With outstanding R&D capability, Hsing Hua self-develops and -manufactures a very wide range of products, including ignition coils, starter motors, flywheels, stators, magnetic-type alternators, capacitor-discharge ignition (CDI) systems, rectifiers, sirens, direction lights, flash relays, flashers/buzzer flashers, speed-limitation devices, and various kinds of special switches.

After years of intensive effort and large-scale financial investment, in 2001 the firm announced the successful development of Taiwan's first engine dual-operating system (EDOS), and has patented it in many industrially advanced nations. Hsing Hua's EDOS has passed the strictest testing regimes for durability, strength, and function.




According to Hsing Hua management, the innovative EDOS enables reverse thrust in standard-type vehicles and engines without the need to add reverse-gear mechanisms in transmission gearboxes or make changes to gearshift levers. In addition, only minor modifications are necessary to the original vehicle bodies or chassis, or to engine bodies, making installation easy.

The EDOS adopts a totally different approach to the traditional mechanical approach to shifting gears, utilizing electronic control instead. This will, says the firm's management, prove revolutionary in auto/motorcycle engine applications.

According to Hsing Hua, the working principle of EDOS is that an engine always rotates in one direction (forward) and people often neglect that, in fact, the thrust generated can also be used to drive the device the engine is powering in the reverse direction. Normally, if you want to have a reverse mode you have to modify the vehicle-body construction, revise the gear assembly, and add a reverse mode to the gearshift lever.

Such alterations are costly, and may generate many other problems, such as unexpected acceleration, flameout, and accelerated parts wear/damage--all leading to the unnecessary wasting of time and money for repair and maintenance. The EDOS, on the other hand, lets a driver or operator choose forward/reverse driving mode by simply pushing a button.

Hsing Hua provides three options for customers adopting EDOS products. First, a customer can buy the parts and install them DIY if the customer's engine model matches Hsing Hua's specifications. Second, Hsing Hua can custom-design the EDOS for different engine models. Third, Hsing Hua can authorize an engine or vehicle maker to make use of the EDOS technology for a royalty.

Each EDOS set includes several key parts, including a relay assembly, a dual-ignition AC generator assembly, a dual-starter motor assembly, a main harness set, a dual-drive clutch assembly, and a controller assembly.

On an ATV model, for example, the EDOS is available in two options. With both, you turn on the power and choose F (forward) or R (reverse). While driving, to change forward/reverse direction, with one option you must stop, turn off the engine, turn it on again and choose the direction. With the other option the vehicle will automatically be stopped, and the direction change will be made in about two seconds while the engine is still running.