GB2106590A - I.C. engine with inertia and displacement pump supercharging - Google Patents
I.C. engine with inertia and displacement pump supercharging Download PDFInfo
- Publication number
- GB2106590A GB2106590A GB08223576A GB8223576A GB2106590A GB 2106590 A GB2106590 A GB 2106590A GB 08223576 A GB08223576 A GB 08223576A GB 8223576 A GB8223576 A GB 8223576A GB 2106590 A GB2106590 A GB 2106590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- engine
- supercharger
- inertia
- displacement
- supercharged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/003—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues using check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
- F02B33/446—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs having valves for admission of atmospheric air to engine, e.g. at starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/12—Drives characterised by use of couplings or clutches therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
- F02M35/10163—Supercharged engines having air intakes specially adapted to selectively deliver naturally aspirated fluid or supercharged fluid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Characterised By The Charging Evacuation (AREA)
- Supercharger (AREA)
Abstract
Internal combustion 10 has inertia supercharger 12 comprising a damping volume 14 connected through pipes 16 to air intake ports (not shown). Pipe 18 connects volume 14 to atmosphere, and has chamber 20 thereon containing displacement supercharger 22 driven by engine crankshaft 24. In a modification there is provided clutch 32 for cutting out the displacement supercharger at a preset engine speed. <IMAGE>
Description
SPECIFICATION
Superchargers for engines
The invention relates to superchargers for internal
combustion or diesel engines.
According to the invention, an inertia superchar
ger is in combination with a displacement super
charger driven by an engine crankshaft. Engine
characteristics at low speeds range are thus signifi
cantly improved.
Inertia superchargers connect air intake ports of
the engine to an air intake manifold, and the
dynamic effect or inertia of the air supplied through
the manifold increases the amount of the air sup
plied into the cylinders. The length of the manifold
may depend on such factors as cylinder volume, the
timing of the actuation of the air intake and exhaust
valves, the sectional area of the manifold and the
number of revolutions of the engine to be tuned with
the operation of the supercharger.
Inertia supercharged engines have better
volumetric efficiency and torque performance than
non-supercharged engines, but only at high engine
speeds. There is little or no improvement at low
speeds.
Since the displacement supercharger is mechani
cally connected to the crankshaft, air is super
charged even at very low engine speeds and im
proves the starting characteristics of the engine.
Figure 1 is a schematic view of a supercharger
according to the invention;
Figure 2 is similar to Figure 1 but shows another
embodiment of the invention; and
Figure 3 is a graph showing performance curves of
engines: the dot and dash line represents a non
supercharged engine, the solid line an inertia super
charged engine, and the broken line an inertia and
displacement supercharged engine according to the
invention.
Referring to Figure 1,an engine 10 has an inertia
supercharger 12 comprising a damping volume 14
or surge tank and a number of pipes 16 each
connecting the damping volume 14 with air intake
ports (not shown) to the engine 10. The combination ,of the damping volume 14 and pipes 16 accelerates airfrom the damping volume 14 through the pipes
16, and so the engine 10 is supercharged by the
inertia of the accelerated air.
A pipe 18 connects the damping volume 14to
atmosphere. On the pipe 18 is a chamber 20
accommodating a displacement supercharger 22 in
the form of a vane compressor. The displacement
supercharger 22 is connected to and driven by a
crankshaft 24 of the engine through a transmission
26 comprising a pulley-V belt drive. In the chamber
20 is a partition block 28 dividing the upper half of
the chamber 20 into two sections. A partition wall 30
divides the pipe 18 in two. As the displacement
supercharger 22 is directly rotated by the crankshaft
24, air is forced into the damping volume 14 even at
very low engine speeds. The combination of the
displacement supercharger 22 and the inertia super
charger 12 supplies enough airtothe engine cylin
ders at any engine speed to improve engine charac
teristics as shown by the broken line in Figure 3.
In Figure 2 an electromagnetic clutch 32 is pro
vided in the transmission 26 and normally held
engaged. The clutch 32 is disengaged when the
engine speed exceeds a present value of about 1,400
rpm. A detector 34 for the number of revolutions of thus engine 10 generates a signal when the speed
exceeds the preset value. The signal from the
detector 34 is fed to a controller 36 which disengages the clutch 32. A check valve 38 is provided in the pipe
18, and allows airfromthe atmosphere to flow only to the damping volume 14. After the displacement supercharger 22stops rotation, air is mainly introduced through the check valve 38.As the displacement supercharger 22 is disconnected from the crankshaft 24, when the engine speed exceeds the preset value, energy for driving the displacement supercharger 22 is saved and can be utilized for other purposes.
Figure 3 shows that the engine characteristics of the displacement and inertia supercharged engine of the invention are superior to those of an inertia supercharged engine and of a non-supercharged engine, especiaily in the low engine speed range.
1. Asuperchargerforan internal combustion or diesel engine comprising an inertia supercharger in combination with a displacement supercharger driven an engine crankshaft.
2. A supercharger according to claim 1 comprising a chamber for accommodating the displacement supercharger in a pipe connecting a damping volume of the inertia supercharger to atmosphere.
3. A supercharger according to claim 1 or claim 2 comprising a checkvalve for allowing only air admission from the atmosphere.
4. A supercharger according to any preceding claim comprising a detector for generating a signal when engine speed exceeds a preset value, a clutch connecting the crankshaft to the displacement supercharger, and means responsive to the signal for disengaging the clutch.
5. A supercharger as herein described with referpence to Figure 1 of the drawings.
6. A supercharger as herein described with reference to Figure 2 of the drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. Asuperchargerforan internal combustion or diesel engine comprising an inertia supercharger in combination with a displacement supercharger driven an engine crankshaft.
2. A supercharger according to claim 1 comprising a chamber for accommodating the displacement supercharger in a pipe connecting a damping volume of the inertia supercharger to atmosphere.
3. A supercharger according to claim 1 or claim 2 comprising a checkvalve for allowing only air admission from the atmosphere.
4. A supercharger according to any preceding claim comprising a detector for generating a signal when engine speed exceeds a preset value, a clutch connecting the crankshaft to the displacement supercharger, and means responsive to the signal for disengaging the clutch.
5. A supercharger as herein described with referpence to Figure 1 of the drawings.
6. A supercharger as herein described with reference to Figure 2 of the drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1981122937U JPS5829122U (en) | 1981-08-21 | 1981-08-21 | Internal combustion engine supercharging device |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2106590A true GB2106590A (en) | 1983-04-13 |
GB2106590B GB2106590B (en) | 1985-03-27 |
Family
ID=14848295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08223576A Expired GB2106590B (en) | 1981-08-21 | 1982-08-17 | Ic engine with inertia and displacement pump supercharging |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5829122U (en) |
DE (1) | DE3230598A1 (en) |
GB (1) | GB2106590B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3309184C2 (en) * | 1983-03-15 | 1986-04-24 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | 4-stroke internal combustion engine charged by means of an exhaust gas turbocharger |
-
1981
- 1981-08-21 JP JP1981122937U patent/JPS5829122U/en active Pending
-
1982
- 1982-08-17 DE DE19823230598 patent/DE3230598A1/en not_active Ceased
- 1982-08-17 GB GB08223576A patent/GB2106590B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3230598A1 (en) | 1983-03-10 |
JPS5829122U (en) | 1983-02-25 |
GB2106590B (en) | 1985-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |