ningbo zhongyi hydraulic motor co., ltd has introduced a new digitally-controlled hydraulically-powered fan drive system intended for heavy-duty engine cooling applications typically found in off-highway construction, on-highway transportation, railroad, power generation, and similar industries.our company is professional hydraulic motor,piston motor,hydraulic winch,pg电子下载-pg电子游戏 ,hydraulic steering unit supplier providing customers from domestic zhongyiyepk and overseas the best and reliable hydraulic products.
based on an advanced digital controller and high-efficiency hydraulic motor technology, the new system offers improved fuel efficiency, more precise thermal control, and improved reliability and maintainability in a broad range of heavy-duty cooling applications.
"controlling engine coolant temperature is only one of the tasks performed by today's cooling systems," explained denison electronics and controls manager.
if more cooling is required at idle, due perhaps to high ambient temperatures, the only way to obtain it is to increase engine speed. but, running the engine faster only adds to the thermal load on the system while increasing fuel consumption and exhaust gas pollution. at the other end of the spectrum, no fan-induced airflow may be needed when a vehicle is in motion but the direct-drive fan will continue to consume engine power and waste fuel.
a number of ingenious devices have been developed to overcome this basic problem with direct-drive fans," gotting continued. "one sees a variety of clutching systems used to disconnect the fan blades from the input shaft, or various kinds of temperature-sensitive viscous couplings, but the basic problem still remains. in all of these systems, fan speed ultimately is dependent on engine speed regardless of actual thermal requirements -- and that is inevitably wasteful."
one other major advantage of this concept is customer confidentiality and process security. the digital controller is supplied in a safe 'vanilla' configuration and allows each user via easy to use software to customize their individual vehicle cooling profile. this information is confidential to their company and is not needed by denison or anyone else even in the event of controller diagnostics being carried out.
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