Tata Motors Limited is India’s largest automobile company, with revenues of $8.8 billion in 2007-08. The company is the world’s fourth largest truck manufacturer, and the world’s second largest bus manufacturer. And it's the producer of the clever new Nano, pictured above and below, which sells in India for the equivalent of about $2,000.
The firm has these 14 patents from around the globe.
Most recently the firm earned Engine Protection System, European Patent Application EP2037110, from 3/18/2009 (Inventor: Narayanan Annamalai Sathiyasivan of Maharashtra, India):This invention relates to Engine protection system which comprises at least one float sensor, auxiliary coolant tank, a relay, Fuel Injection Pump (FIP) solenoid switch and coolant level warning indicator wherein said float sensor is provided on an auxiliary coolant tank to sense the level of coolant inside the said tank. Said auxiliary coolant tank is provided to maintain sufficient coolant level inside the radiator. When coolant level inside the said auxiliary coolant tank drops beyond the specified safe limit then float unit of said float sensor moves down and completes the electrical circuit, because of which the FIP solenoid switch will cut off the diesel supply to the engine. After this even though the engine gets cranked but it will not start unless the level of coolant in a said tank resumes to the normal level. According to another embodiment the said FIP solenoid switch of diesel engine is replaced with electronic control unit for petrol engine.
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