STRATIFIED SCAVENGING TWO-CYCLE ENGINE

Title:

STRATIFIED SCAVENGING TWO-CYCLE ENGINE

Document Type and Number:

WIPO Patent Application WO/1998/017901

Kind Code:

A1

Abstract:

A stratified scavenging two-cycle engine, which is more compact in construction. The stratified scavenging two-cycle engine comprises a scavenging flow passage (3) for connection between a cylinder chamber (4a) and a crank chamber (1a), and an air flow passage (2) connected to the scavenging flow passage (3). The scavenging flow passage (3) is continuously formed by a communication portion (30) extending from the crank chamber (1a) toward a cylinder chamber (4a), and a scavenging direction adjustment portion (31) extending from a communication portion (30) toward a cylinder inner surface (4b) and opened at a scavenging port (3a) to the cylinder inner surface (4b). The air flow passage (2) extends to an area surrounded by the communication portion (30), scavenging direction adjustment portion (31) and the cylinder inner surface (4b).

Inventors:

NOGUCHI MASANORI (JP)

Application Number:

PCT/JP1997/003713

Publication Date:

April 30, 1998

Filing Date:

October 15, 1997

Export Citation:

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Assignee:

KOMATSU ZENOA KK (JP)
PETROLEUM ENERGY CENTER FOUND (JP)
NOGUCHI MASANORI (JP)

International Classes:

F02B17/00; F02B25/16; F02B25/20; F02B25/22; F02B33/04; F02B33/30; F02B33/44; F02F1/22; F02B75/02; (IPC1-7): F02B33/04; F02B33/44; F02B25/22; F02B25/16; F02B17/00

Foreign References:

JPS52170913U	1977-12-26
JPS5819304Y2	1983-04-20
JPS59170423A	1984-09-26
JPS585424A	1983-01-12

Other References:

None
See also references of EP 0933514A4

Attorney, Agent or Firm:

Matsuzawa, Osamu (11-10 Uchikanda 1-chom, Chiyoda-ku Tokyo 101, JP)

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