ROTARY ENGINE WITH ALIGNED ROTOR

1 - 4 . (canceled)

5 . A rotary engine comprising:

a shaft including a first cam and a second cam, the first cam axially displaced from the second cam;

a first rotor mounted at least partially around the first cam, the first rotor having a rotor apex portion; and

a second rotor mounted at least partially around the second cam, the second rotor having a rotor apex portion, wherein the rotor apex portion of the first cam are aligned with the rotor apex portion of the second cam.

6 . (canceled)

7 . The rotary engine of claim 5 , wherein the respective rotor apex portions are aligned within twenty (20) degrees of each other.

8 - 9 . (canceled)

10 . A rotary engine comprising:

a first rotor which provides a first phase of compression; and

a second rotor in communication with said first rotor to provide a second phase of compression, a combustion and a first phase of expansion, said second rotor in communication with said first rotor to provide a second phase of expansion, said first rotor and said second rotor rotated by a single shaft such that each apex of said respective first rotor and said second rotor are aligned.

11 . The rotary engine as recited in claim 10 , wherein each apex of said respective first rotor and said second rotor are aligned within twenty (20) degrees.

12 . The rotary engine as recited in claim 10 , wherein said first rotor defines a rotor periphery greater than said second rotor.

13 . The rotary engine as recited in claim 10 , wherein first rotor is mounted at least partially around a first eccentric cam of said shaft and said second rotor is mounted at least partially around a second eccentric cam of said shaft.

14 . The rotary engine as recited in claim 10 , wherein, said first rotor defines three circumferentially spaced first rotor apexes and said second rotor defines three circumferentially spaced second rotor apexes.

15 . (canceled)