US 7,516,725 B2
Two-stroke cycle engine
Kazuyuki Uenoyama, Nagoya (Japan); Yoshio Kobayashi, Nagoya (Japan); and Kazunori Kudo, Nagoya (Japan)
Assigned to Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)
Filed on Jan. 31, 2007, as Appl. No. 11/700,036.
Application 11/700036 is a division of application No. 10/634918, filed on Aug. 06, 2003, granted, now 7,225,769.
Application 10/634918 is a division of application No. 10/388727, filed on Jan. 09, 2003, granted, now 6,729,276.
Application 10/388727 is a division of application No. 10/152035, filed on May 22, 2002, granted, now 6,564,761.
Application 10/152035 is a division of application No. 09/832802, filed on Apr. 12, 2001, granted, now 6,408,805.
Application 09/832802 is a division of application No. 09/558596, filed on Apr. 26, 2000, granted, now 6,257,179.
Claims priority of application No. 11-122599 (JP), filed on Apr. 28, 1999; application No. 11-357099 (JP), filed on Dec. 16, 1999; application No. 11-371683 (JP), filed on Dec. 27, 1999; application No. 11-371684 (JP), filed on Dec. 27, 1999; application No. 11-375130 (JP), filed on Dec. 28, 1999; and application No. 2000-1316 (JP), filed on Jan. 07, 2000.
Prior Publication US 2007/0125325 A1, Jun. 07, 2007
Int. Cl. F02B 25/20 (2006.01)
U.S. Cl. 123—73PP 4 Claims
OG exemplary drawing
 
1. A two-stroke cycle engine comprising:
a scavenger passage which connects a scavenging port on the side of the cylinder to the crank chamber inside the crankcase, and goes through the mounting surface where the cylinder and crankcase are attached to each other; and
a removable guide with a surface forming a curved smooth channel which is attachable to said scavenger passage in the crankcase from the mounting surface, and forms a portion of said scavenger passage with the curved channel,
wherein said removable guide comprises a positioning tooth which engages with the hole in the gasket for the mounting surface where the cylinder and crankcase are attached to each other.