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US 11,085,369 B2Granted
Crankshaft and conrod assembly
AssigneeVolvo Car Corporation
InventorsChrister Odenmarck, Peter Petrov, Fredrik Strömstedt
Life of this patent
Estimating the term…
Abstract
A crankshaft and conrod assembly (100) comprising a crankshaft (110) and a conrod (150), wherein the crankshaft (110) comprises at least one main journal (111) and one crankpin journal (112), where the crankshaft (110) is provided with an oil supply structure for supplying the crankpin journal (112) with lubrication oil and the conrod (150) with an oil pressure, wherein the oil supply structure comprises: an oil supply conduit (113) provided between the main journal and the crankpin journal (112), at least a first and a second oil supply opening (114, 115) provided at the crankpin journal (112), and a connection point (116) where the oil supply conduit (113) connects to the first and second oil supply opening (114, 115).
Claims20
A crankshaft and conrod assembly comprising a crankshaft and a conrod, wherein:
- the crankshaft comprises at least one main journal and one crankpin journal, and the at least one conrod is provided upon the crankpin journal, and the crankshaft is provided with an oil supply structure for supplying the crankpin journal with lubrication oil and the conrod with an oil pressure, wherein the oil supply structure comprises:
- an oil supply conduit provided between the main journal and the crankpin journal, at least a first and a second oil supply opening provided at the crankpin journal, and
- a connection point where the oil supply conduit connects to the first and second oil supply openings,
- wherein the conrod is arranged upon the crank pin journal through a bearing sleeve, at which at least a first and a second oil groove is provided in a circumferential direction at an inner surface of the bearing sleeve,
- wherein the first oil supply opening is provided at a first radial distance (D1) from a rotational axis (rx1) of the crankshaft and where the second oil supply opening is provided at a second radial distance (D2) from the rotational axis (rx1) and where both the first and the second radial distances (D1, D2) are larger than or equal to the distance (d1) between the connection point and the rotational axis (rx1) of the crankshaft, and
- wherein an opening angle (A) between the first and the second oil supply opening is larger or equal to an angle (B1, B2) between opposing end portions of the two oil grooves and smaller or equal to the angular length (C1, C2) of the respective oil groove.
3 more elements
A crankshaft and conrod assembly comprising a crankshaft and a conrod, wherein:
- the crankshaft comprises at least one main journal and one crankpin journal, and the at least one conrod is provided upon the crankpin journal, and the crankshaft is provided with an oil supply structure for supplying the crankpin journal with lubrication oil and the conrod with an oil pressure, wherein the oil supply structure comprises:
- an oil supply conduit provided between the main journal and the crankpin journal, at least a first and a second oil supply opening provided at the crankpin journal, and
- a connection point where the oil supply conduit connects to the first and second oil supply openings,
- wherein the conrod is arranged upon the crank pin journal through a bearing sleeve, at which at least a first and a second oil groove is provided in a circumferential direction at an inner surface of the bearing sleeve,
- wherein the first oil supply opening is provided at a first radial distance (D1) from a rotational axis (rx1) of the crankshaft and where the second oil supply opening is provided at a second radial distance (D2) from the rotational axis (rx1) and where both the first and the second radial distances (D1, D2) are larger than or equal to the distance (d1) between the connection point and the rotational axis (rx1) of the crankshaft,
- wherein the distance (d1) between the connection point and the rotational axis (rx1) of the crankshaft is shorter than the distance between the rotational axis (rx1) of the crankshaft and the centre axis (rx2) of the crankpin journal, and
- wherein the distance (D1) between the first oil supply opening and the rotational axis (rx1) of the crankshaft is shorter than the distance between the rotational axis (rx1) of the crankshaft and the centre axis (rx2) of the crankpin journal.
4 more elements
A crankshaft and conrod assembly comprising a crankshaft and a conrod, wherein:
- the crankshaft comprises at least one main journal and one crankpin journal, and the at least one conrod is provided upon the crankpin journal, and the crankshaft is provided with an oil supply structure for supplying the crankpin journal with lubrication oil and the conrod with an oil pressure, wherein the oil supply structure comprises:
- an oil supply conduit provided between the main journal and the crankpin journal, at least a first and a second oil supply opening provided at the crankpin journal, and
- a connection point where the oil supply conduit connects to the first and second oil supply openings,
- wherein the conrod is arranged upon the crank pin journal through a bearing sleeve, at which at least a first and a second oil groove is provided in a circumferential direction at an inner surface of the bearing sleeve,
- wherein the first oil supply opening is provided at a first radial distance (D1) from a rotational axis (rx1) of the crankshaft and where the second oil supply opening is provided at a second radial distance (D2) from the rotational axis (rx1) and where both the first and the second radial distances (D1, D2) are larger than or equal to the distance (d1) between the connection point and the rotational axis (rx1) of the crankshaft,
- wherein the distance (d1) between the connection point and the rotational axis (rx1) of the crankshaft is shorter than the distance between the rotational axis (rx1) of the crankshaft and the centre axis (rx2) of the crankpin journal, and
- wherein the distance (D2) between the second oil supply opening and the rotational axis (rx1) of the crankshaft is shorter than the distance between the rotational axis (rx1) of the crankshaft and the centre axis (rx2) of the crankpin journal.
4 more elements
Dependencies are inferred from the claim text.