MUMBAI, India, Aug. 8 -- Intellectual Property India has published a patent application (202421006871 A) filed by Tata Motors Passenger Vehicles Limited, Maharashtra, on Feb. 1, 2024, for 'a variable compression ratio engine.'

Inventor(s) include Girish Panchal.

The application for the patent was published on Aug. 8, under issue no. 32/2025.

According to the abstract released by the Intellectual Property India: "The present invention relates to a variable compression ratio engine (200). The engine (200) includes of an engine block (101) defined by a crankcase (152) and a cylinder section extended from the crankcase, the cylinder section define with a bore (111). Further, the engine includes a crankshaft (151) rotatable about a crank axis defined in the crankcase (170), a piston (110) 10 operatively connectable to the crankshaft (151) and reciprocally disposable in the bore (111) of the cylinder section of the engine block (101), a connecting rod (120). The engine further includes an actuating mechanism operatively connecting between a portion the connecting rod (120) and the crankshaft (151) and operable between a first condition and a second condition. The regulated movement of the piston (110) from the first end position (105a) to the second 15 end position (105b) is configured to vary compression ratio from a first threshold to a second threshold."

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