Internal combustion engine with settable variable compression ratio and with a switching module

US10012143B2 · kind B2 · utility

Assignee

• FEV Group GmbH · DE

Inventors

• Uwe Schaffrath · Herzogenrath, DE
• Andre Prinz

Key dates

• Filing date: Feb 24, 2016
• Grant date: Jul 3, 2018
• Expiry date: Oct 13, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/22
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an internal combustion engine (1) having a settable variable compression ratio and having a connecting rod (3), which connecting rod has an adjustment mechanism (4) for the adjustment of the settable variable compression ratio, a first hydraulic line (5), a second hydraulic line (6), a hydraulic outflow duct (47) and a switching module (21) for the switching of the adjustment mechanism (4), wherein the switching module (21) is arranged on the connecting rod (3) and a first position of the switching module (21) corresponds to a first compression ratio and a second position of the switching module (21) corresponds to a second compression ratio that differs from the first compression ratio, wherein the switching module (21) has a switching element (22) and a sleeve (23) surrounding the switching element (22), wherein the switching element (22) and the sleeve (23) are movable relative to one another, and the switching element (22) has a recess (36) and an edge region (37) bordering the recess (36), wherein, in the first position of the switching module (21), the recess (36) and the sleeve (23) connect the first hydraulic line (5) in fluid-conducting fashion to …