| 摘要 |
PCT No. PCT/GB90/01692 Sec. 371 Date Jun. 5, 1992 Sec. 102(e) Date Jun. 5, 1992 PCT Filed Nov. 5, 1990 PCT Pub. No. WO91/06747 PCT Pub. Date May 16, 1991.The invention relates to an internal combustion engine having separate rotary compression and expansion sections and a combustion chamber (16) having valved inlet and outlet ports (21,22) communicating with the compression and expansion chambers respectively. Each section is a rotary device comprising a first rotor (14b) rotatable about a first axis (11) and having at its periphery a recess (R) bounded by a curved surface; and a second rotor (14a) counter-rotatable to the first rotor (14b) about a second axis (10), parallel to the first axis (11), and having a radial lobe (P) bounded by a curved surface, the rotors intermeshing whereby, on rotation thereof, a transient chamber of progressively increasing (expansion section) or decreasing (compression section) volume is defined between them. The rotors (14a,14b) are rotatable at a relative speed ratio, preferably 2:3, and are contoured such that during passage of the lobe (P) through the recess (R), the recess surface is continuously swept, by both a tip (17) of the lobe (P) and a movable location (18) on the lobe (P) which progresses along the lobe surface, to define the transient chamber. |
