BorgWarner has patented a variable cam timing phaser with a lock pin that acts as a shutoff valve, preventing oil leakage from advance and retard chambers. This innovation maintains oil in the phaser after engine shutdown and reduces side load on the lock pin during unlocking. GlobalData’s report on BorgWarner gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on BorgWarner, Turbocharger bearings was a key innovation area identified from patents. BorgWarner's grant share as of January 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Variable cam timing phaser with lock pin preventing oil leakage
A recently granted patent (Publication Number: US11885245B2) discloses a variable cam timing phaser designed to optimize engine performance. The phaser includes a housing assembly with a rotor assembly connected to a camshaft, featuring chambers separated by vanes to create advance and retard chambers. A lock pin mechanism controls the angular position between the housing and rotor assembly, with fluid passages and an oil control valve regulating fluid flow to these chambers. The phaser is oil pressure actuated, ensuring precise timing adjustments for improved engine efficiency and performance.
Furthermore, the patent details additional configurations of the variable cam timing phaser, including multiple vanes within the rotor assembly to create additional advance and retard chambers. These chambers are interconnected through passages to facilitate fluid flow control for optimal cam timing adjustments. The lock pin mechanism, with specific design features like lands and annuli, plays a crucial role in regulating fluid flow within the phaser. Overall, the innovative design of this variable cam timing phaser offers a sophisticated solution for enhancing engine performance through precise camshaft timing adjustments based on oil pressure actuation.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
