Camshaft phasers and their rotors and variable cam timing systems

Abstract

The invention discloses a cam shaft phase adjuster, a rotor and a changeable cam timing system thereof. The rotor comprises a substrate and a plurality of blades, wherein the substrate is provided with front and rear end faces; the blades are fixed on the substrate, arrayed at intervals along the circumferential direction and outward extended along the radial direction; the rear end face of the substrate is provided with a first groove, a plurality of first oil slots and a second oil slot; the first groove is used for containing an end part of a cam shaft; the first oil slots are located on the periphery of the first groove and are communicated with the first groove; the first oil slots penetrate through a side wall of the substrate along the radial direction; the second oil slot is located on the periphery of the first groove and is communicated with the first groove; the front end face of the substrate is provided with a plurality of second oil slots penetrating through the side wall of the substrate; the first oil slots and the second oil slot are respectively located on the two sides of the blades; the second and first oil slots are arrayed along the circumferential direction in a staggered form; an axial through hole communicated with the second groove and the second oil slots is formed between the front and rear end faces of the substrate. The rotor provided by the invention can be utilized to reduce the axial size of the rotor; the manufacturing technique of the rotor can be simplified; the manufacturing cost of the rotor is reduced.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a rotor of a camshaft phase adjuster, a camshaft phase adjuster comprising the rotor, and a variable cam timing comprising the camshaft phase adjuster ( Variable Camshaft Timing, referred to as VCT) system. Background technique [0002] Depending on the current operating conditions of the internal combustion engine, the timing of the gas exchange valves can be influenced by changing the phase between the crankshaft and the camshaft, thereby achieving beneficial effects such as reduced fuel consumption and the production of harmful substances. This device that can adjust the phase between the crankshaft and the camshaft is the camshaft phase adjuster. [0003] Such as figure 1 As shown, an existing camshaft phase adjuster includes: a stator 1, which has a plurality of bosses 11 extending radially inward, and a hydraulic chamber 12 is formed betwee...

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is: the axial size of the rotor of the camshaft phase adjuster is relatively large, the manufacturing process of the rotor is complicated, and the manufacturing cost of the rotor is relatively high

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