Low profile internally packaged fuel injection system for two cycle engine

Patent 4702202 Issued on October 27, 1987. Estimated Expiration Date:

August 26, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2890692

3190271

Intake manifold for a vertical shaft engine
Patent #: 4227492
Issued on: 10/14/1980
Inventor: Haase

Two-cycle engine with fuel injection
Patent #: 4290394
Issued on: 09/22/1981
Inventor: Frank , et al.

Fuel distribution system for an internal combustion engine
Patent #: 4401063
Issued on: 08/30/1983
Inventor: Haase

Fuel priming system with integral auxilliary enrichment feature
Patent #: 4498434
Issued on: 02/12/1985
Inventor: Baltz , et al.

Fuel rail Patent #: 4601275
Issued on: 07/22/1986
Inventor: Weinand

Inventors

Assignee

Brunswick Corporation

Application

No. 06/900595 filed on 08/26/1986

US Classes:

123/184.24, Manifold having plenum123/456, Common rail system123/73AFuel to crankcase

Examiners

Primary: Feinberg, Craig R.
Assistant: Okonsky, David A.

Attorney, Agent or Firm

Andrus, Sceales, Starke & Sawall

International Classes

F02M 35/10 (20060101)
F02M 69/10 (20060101)
F02B 33/02 (20060101)
F02M 69/46 (20060101)
F02B 33/04 (20060101)
F02B 61/00 (20060101)
F02B 61/04 (20060101)
F02B 75/00 (20060101)
F02B 75/02 (20060101)

Abstract

In a two cycle internal combustion engine (2), a fuel injection system is provided with a low profile compact intake manifold (22) mounted to the crankcase (8) by an adaptor plate (24) and defining an intake air flow path in a first direction (28) behind the manifold (22) through a gap between the manifold (22) and the crankcase (8) provided by the adaptor plate (24). Intake air then flows (32) into throttle bore passages (30) from behind the manifold and then reverses direction and flows through supply passages (34) having fuel injectors (38) and then into the crankcase (8). The passages share a common plenum (42) within the manifold. The fuel injectors (38), their electrical connectors (48) and a common rigid fuel supply rail (44) are all in the common plenum (42) entirely within the low profile manifold (22) and sealed from moisture and salt in a marine environment.