Claims
- 1. A two-stroke engine comprising:
- at least one cylinder having a combustion chamber,
- an exhaust duct connected to said combustion chamber,
- at least one duct for the intake of fresh gas compressed by compression means for delivering said fresh compressed gas,
- at least a first rotary valve for opening and closing of said exhaust duct,
- at least a second rotary valve for feeding fluid into said combustion chamber, and
- fuel injection or metering means,
- wherein said second rotary valve includes two passages, a first of said two passages is connected to the compression means through a first circuit and a second of said two passages is connected to the compression means by a second circuit comprising said fuel injection or metering means, and
- wherein an opening of said second passage into the combustion chamber takes place after that of the first passage.
- 2. The engine according to claim 1, wherein the engine is a diesel engine.
- 3. The engine as claimed in claim 1, wherein said second rotary valve is connected to compression means and said fluid corresponds to said fresh compressed gases.
- 4. The engine as claimed in claim 1, wherein the fuel injection or metering means includes a pneumatic injection device controlled by a solenoid.
- 5. The engine as claimed in claim 1, wherein the fuel injector or metering means includes a high pressure liquid injector.
- 6. A two-stroke engine comprising:
- at least one cylinder having a combustion chamber,
- an exhaust duct connected to said combustion chamber,
- at lest one duct for the intake of fresh air compressed by compression means for delivering said fresh compressed gas,
- at least a first rotary valve for opening and closing of said exhaust duct, and
- wherein said second rotary valve is connected to the compression means by a first circuit comprising fuel supply means, and
- wherein said engine has a second circuit for supplying the cylinder with fresh non-carburetted gas, said second circuit connecting the compression means to a port formed in a wall of the cylinder at a low portion of the combustion chamber.
- 7. The engine as claimed in claim 6, which said second circuit comprises a valving means.
- 8. The engine as claimed in one of claims 1, 6 or 7, wherein at least one of said rotary valves is housed in a top portion of the combustion chamber.
- 9. The engine as claimed in claim 8, wherein the top part of the combustion chamber includes a cylinder head.
- 10. The engine as claimed in one of claims 1, 6 or 7, wherein said second rotary valve comprises two passages.
- 11. The engine according to one of claims 6 or 7, wherein the engine is a petrol engine.
- 12. Two-stroke engine comprising:
- at least one cylinder having a combustion chamber,
- an exhaust duct connected to said combustion chamber,
- at least one intake duct for the intake of fresh gas compressed by compression means for delivering said fresh compressed gas,
- at least a first rotary valve for entirely controlling an opening and closing of said exhaust duct,
- at least a second rotary valve including at least one passage for enabling a direct injecting of fluid into said combustion chamber in such a manner so as to form a scavenging loop between the intake duct and the exhaust duct,
- wherein said second rotary valve is connected to said compression means and said fluid corresponds to said fresh compressed gases, and
- wherein said second rotary valve comprises two passages.
Priority Claims (1)
Number |
Date |
Country |
Kind |
89 08853 |
Mar 1989 |
FRX |
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Parent Case Info
This is a continuation of application Ser. No. 546,831 filed Jul. 2, 1990, now abandoned.
US Referenced Citations (10)
Continuations (1)
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Number |
Date |
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Parent |
546831 |
Jul 1990 |
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