GB1296769A - - Google Patents

Abstract

1296769 Rotary I.C. engines C A VARON 18 Nov 1970 54838/70 Heading F1F A rotary I. C. engine, spark or diesel, providing two firing impulses per revolution, comprises a fixed cylindrical stator 5 having an annular channel receiving a concentric cylindrical rotor 3, having diametrically opposed radially sliding vanes 17a, b, with diagonal passages 18, which transfer fluid from an outer space, formed by a recess 8 in the stator channel, to a similar inner space 9 therein, whilst the vane is being cammed radially inwards by a straight ramp 11 at the end 15 of the space 12. The vane is cammed radially outward by a similar ramp at the end 14 of the inner space, and the vane passages 18 are blanked by the rotor in all other positions. From the position of Fig. 2, mixture is drawn in at an external port 16 by the vane 17a during the first quarter revolution clockwise, whilst mixture similarly drawn in by the preceding vane 17b is compressed. The latter charge is fired at 15, Fig. 3, and, as the vane 17b is being cammed inwards by the ramp 10, the charge is transferred from the outer to the inner space 9, where, during the next quarter revolution, it expands against the vane 17b, which, at the end of the next quarter, allows it to exhaust at 14 as the vane 17b is being cammed outwards by the end ramp of the inner space 9. Each vane thus has a fine impulse at 15, making two per revolution on a four-stroke cycle.