Mercedes-Benz has been granted a patent for an internal combustion engine that includes a crankshaft, camshaft, cylinder, piston, gas exchange valve, valve clearance compensation device, and a control unit. The control unit aligns the camshaft to pressure-load the valve clearance compensation device, holding the gas exchange valve in an open position during idle state. GlobalData’s report on Mercedes-Benz Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Mercedes-Benz Group, Battery management systems was a key innovation area identified from patents. Mercedes-Benz Group's grant share as of September 2023 was 41%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for an internal combustion engine with valve clearance compensation
A recently granted patent (Publication Number: US11761356B2) describes an internal combustion engine for motor vehicles. The engine includes a crankshaft, a camshaft, a cylinder, and a piston. It also features a first gas exchange valve and a first valve clearance compensation device. The first gas exchange valve can be moved between an open and closed position by a first cam on the camshaft.
The patent also introduces a shaft positioning mechanism and a control unit. The control unit is responsible for aligning the camshaft, particularly during a transition from the engine's operating state to an idle state. In the idle state, the first valve clearance compensation device is pressure-loaded by a plateau area on the first cam, ensuring that the first gas exchange valve remains in the open position.
Additionally, the patent includes claims for a second gas exchange valve and a second valve clearance compensation device. The second valve clearance compensation device is in stroke-free contact with the second cam while the first valve clearance compensation device is pressure-loaded by the plateau area. This arrangement allows for the decompression of the cylinder.
The patent also covers a method for operating the internal combustion engine. The method involves aligning the camshaft using the control unit, specifically during the transition from the engine's operating state to the idle state. This alignment ensures that the first valve clearance compensation device is pressure-loaded by the plateau area, holding the first gas exchange valve in the open position.
Overall, this patent introduces an internal combustion engine design that includes valve clearance compensation devices and a control unit for precise camshaft alignment. The design aims to optimize engine performance during idle states and transitions between operating and idle states.