BR-102024010473-B1 - Camshaft with internal engine lubrication
Abstract
CAMSHAFT WITH INTERNAL LUBRICATION FOR THE ENGINE. The present invention belongs to the automotive sector and refers, more specifically, to a camshaft that solves premature wear in the camshaft, especially in VW EA111 engines, through an internal lubrication system in the camshaft.
Inventors
- LAERTE LOURENÇON
Assignees
- 4 TEMPOS INDUSTRIA E COMERCIO DE AUTO PEÇAS LTDA
Dates
- Publication Date
- 20260317
- Application Date
- 20240524
Claims (1)
- 1- ENGINE CAMSHAFT WITH INTERNAL LUBRICATION, characterized by being constituted of a through hole of 397 mm and a diameter of 7 mm; 4 lubrication outlet holes in the bearings (1F)(2F)(3F)(4F) of 2 mm diameter, with the main feed access (AL) for lubricating oil (OL) at the inlet; and also, a 7.8 mm hole is arranged at the inlet, before the main feed (AL), and another at the outlet, after the fourth hole (4F), where 8 mm diameter steel sealing balls (EF) are placed.
Description
Technological sector of invention [001] The present invention pertains to the automotive sector, and refers more specifically to a camshaft that solves premature wear in the camshaft, especially in VW EA111 engines, through an internal lubrication system in the camshaft. State of the art [002] Premature wear on the camshaft in engines, such as the VWEA111, is a critical problem that can affect engine performance and longevity. This wear occurs mainly due to friction between the metal surfaces of the camshaft and associated components, such as tappets and rocker arms. In the specific case of the VWEA111, which does not have internal lubrication on the shaft, proper maintenance of oil pressure in the cylinder head lubrication system becomes even more essential. [003] The function of the lubrication system is to provide an oil film between the contact surfaces, minimizing friction and dissipating the heat generated by the movement of the valves. When the oil pressure is insufficient, the oil flow to the cylinder head is compromised, resulting in inadequate lubrication of the contact surfaces. This leads to a significant increase in wear, since the lack of a protective oil layer allows direct metal-to-metal contact, accelerating the deterioration of the parts. [004] To improve oil flow in the cylinder head and prevent premature wear, it is essential to ensure that the oil pressure is always at the levels recommended by the manufacturer. Several measures, including the use of high-quality oil with the correct specifications, regular maintenance of the lubrication system, and periodic checking of the oil pump and lubrication channels to ensure they are not obstructed or damaged, are conventionally practiced, although ineffective to some extent. New Invention Details [005] In this context, the camshaft that improves bearing lubrication and maintains oil pressure in the lubrication system, especially in the EA111 engine, provides a number of significant advantages. First, there is a reduction in premature wear of parts, thus extending the engine's service life. With more effective bearing lubrication, the engine operates more smoothly and efficiently, resulting in better power delivery, lower fuel consumption and reduced emissions. [006] Furthermore, oil pressure stability is crucial to prevent damage caused by lack of lubrication in critical engine areas, such as the camshaft bearings. With improved lubrication, there is also a reduction in engine noise and vibration, providing a more comfortable and quieter driving experience. [007] Another advantage is the reduced need for maintenance, since more efficient lubrication and consistently maintained oil pressure decrease the likelihood of problems in the lubrication system and related components. This results in time and money savings for the vehicle owner, as well as ensuring the long-term reliability and durability of the engine. [008] These advantages are achieved by means of an internal lubrication system, consisting of holes drilled into the original shaft, coupled with ball seals. These elements work together to direct the flow of oil to the oil inlet bearing in the camshaft, thus improving its lubrication. Description of the attached drawings [009] In order that the present invention may be fully understood and put into practice by any technician in this technological sector, it will be described in a clear, concise and sufficient manner, based on the attached drawings, which illustrate and support it, listed below: Figure 1 represents the perspective and side view in section of the camshaft of the invention; Figure 2 represents the perspective and side view in section of the original shaft belonging to the prior art, without internal lubrication. Detailed description of the invention. [010] The invention reveals a solution to overcome the engineering error in the construction of VW EA111 engines that generates oil pressure loss in the camshaft. For this, the original camshaft has a through hole of 397 mm and a diameter of 7 mm; 4 lubrication outlet holes in the bearings (1F)(2F)(3F)(4F) of 2 mm diameter, with a main feed access (AL) for lubricating oil (OL) at the inlet; and also, a 7.8 mm hole is placed at the inlet, before the main feed (AL), and another at the outlet, after the fourth hole (4F), where 8 mm diameter steel sealing balls (EF) are placed. [011] In manufacturing, the raw cast camshaft is initially placed in the machining center to create the ball housing. It is then subjected to another machine where it is drilled along its length. After this operation, lubrication holes are drilled in the bearings. After going through all machining, heat treatment and grinding finishing processes, the two balls are inserted into its end according to the supplied drawing. [012] It is important to emphasize that the figures and descriptions provided do not limit the ways in which the inventive concept now proposed can be implemented, but rather illustrate and m