Patent JPS5796048A successfully refreshed from Google Patents.
US4096697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for conditioning the intake air of a supercharged, low-compression ratio diesel engine
Assignee: Everllence France SAS
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Filing: 1976-02-24
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Granted: 1978-06-27
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Expires: 1996-02-24
Abstract
Abstract A method of and means for conditioning a substantially highly supercharged, low-compression ratio Diesel engine at start and low-load or idling speed operation wherein the improvement consists in the step of temporarily preheating the air supply before it enters or is pressure fed into the combustion chambers of the engine cylinders.
Inventors
- 👤 Bernard Treuil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
F; F02; F02B; F02B37/00; F02M; F02M31/00; F02M31/02; F02M31/04; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 81
Claim 1
Independent Claim
120 words
A method for at least temporarily heating the pre-compressed intake air of a supercharged, low compression ratio, internal combustion engine at start and low-load operating conditions, said method comprising the step of at least temporarily pre-heating said intake air before it is used to support combustion for burning fuel in the cylinder, wherein the improvement comprises initially cranking the engine from the stopped condition while temporarily delaying any fuel injection into at least one cylinder for at least one part of the starting time period of the engine and at the same time selectively impeding the exhaust gas streaming from said at least one cylinder for retaining a controlled amount of residual working gases in said at least one cylinder.
Claim 2
Independent Claim
120 words
A method for at least temporarily heating the pre-compressed intake air of a supercharged, low compression ratio, internal combustion engine at start and low-load operating conditions, said method comprising the step of at least temporarily pre-heating said intake air before it is used to support combustion for burning fuel in the cylinder, wherein the improvement comprises initially cranking the engine from the stopped condition while temporarily delaying any fuel injection into at least one cylinder for at least one part of the starting time period of the engine and at the same time selectively impeding the exhaust gas streaming from said at least one cylinder for retaining a controlled amount of residual working gases in said at least one cylinder.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein said flow rate reduction is produced between at least one engine cylinder and its associated exhaust manifold communicating therewith.
Claim 4
Dependent Claim
37 words
A method according to claim 1, wherein said flow rate reduction is produced towards the downstream end portion of at least one exhaust manifold on either side of at least one drive turbine of supercharging turbo-blower means.
Claim 5
Dependent Claim
52 words
A method according to claim 1, comprising the additional step of cranking said engine for its starting time period by drivingly rotating same mechanically through its crank-shaft for a small number of working cycles corresponding to about ten compressions, i.e. twenty revolutions in the case of a four-stroke engine without injecting fuel.
Claim 6
Dependent Claim
31 words
A method according to claim 1, comprising the additional step of automatically keying and phase-locking the fuel-injection time delay in follow-up relationship to the instant temperature of the preheated intake air.
Claim 7
Dependent Claim
50 words
A method according to claim 1, comprising the step of selectively injecting fuel substantially directly into at least one intake manifold of said engine and burning said fuel therein to produce hot combustion gases and thus mixing the latter directly with the supercharging intake air fed into said intake manifold.
Claim 8
Dependent Claim
47 words
A method according to claim 1, for an engine the supercharging precompressed air of which is normally cooled before its induction through forced circulation of a guided flow of an auxiliary cooling fluid, comprising the step of selectively replacing said cooling fluid by an auxiliary heating fluid.
Claim 9
Dependent Claim
46 words
A method according to claim 6, for an engine the supercharging air of which is normally cooled before its induction through forced circulation of a guided flow of an auxiliary cooling fluid, comprising the step of selectively replacing said cooling fluid by an auxiliary heating fluid.
Claim 10
Dependent Claim
36 words
A method according to claim 1, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 11
Dependent Claim
36 words
A method according to claim 8, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 12
Dependent Claim
36 words
A method according to claim 7, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 13
Dependent Claim
36 words
A method according to claim 8, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 14
Dependent Claim
23 words
A method according to claim 1, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 15
Dependent Claim
23 words
A method according to claim 6, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 16
Dependent Claim
23 words
A method according to claim 7, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 17
Dependent Claim
23 words
A method according to claim 8, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 18
Dependent Claim
23 words
A method according to claim 9, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 19
Dependent Claim
23 words
A method according to claim 10, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 20
Dependent Claim
23 words
A method according to claim 11, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 21
Dependent Claim
23 words
A method according to claim 12, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 22
Dependent Claim
50 words
A method according to claim 1, comprising the step of selectively injecting fuel substantially directly into at least one intake manifold of said engine and burning said fuel therein to produce hot combustion gases and thus mixing the latter directly with the supercharging intake air fed into said intake manifold.
Claim 23
Dependent Claim
46 words
A method according to claim 21, for an engine the supercharging air of which is normally cooled before its induction through forced circulation of a guided flow of an auxiliary cooling fluid, comprising the step of selectively replacing said cooling fluid by an auxiliary heating fluid.
Claim 24
Dependent Claim
36 words
A method according to claim 21, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 25
Dependent Claim
36 words
A method according to claim 22, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 26
Dependent Claim
23 words
A method according to claim 21, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 27
Dependent Claim
23 words
A method according to claim 22, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 28
Dependent Claim
23 words
A method according to claim 23, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 29
Dependent Claim
23 words
A method according to claim 24, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 30
Dependent Claim
46 words
A method according to claim 1, for an engine the supercharging air of which is normally cooled before its induction through forced circulation of a guided flow of an auxiliary cooling fluid, comprising the step of selectively replacing said cooling fluid by an auxiliary heating fluid.
Claim 31
Dependent Claim
36 words
A method according to claim 29, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 32
Dependent Claim
23 words
A method according to claim 29, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 33
Dependent Claim
23 words
A method according to claim 30, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 34
Dependent Claim
36 words
A method according to claim 1, for an engine with cylinders cooled by forced circulation of a guided flow of an auxiliary coolant, comprising the step of selectively replacing said coolant by an auxiliary heating fluid.
Claim 35
Dependent Claim
23 words
A method according to claim 33, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 36
Dependent Claim
23 words
A method according to claim 1, comprising the step of selectively confining and heating the ambient air of the environment surrounding said engine.
Claim 37
Dependent Claim
58 words
A method according to claim 1, comprising the step of automatically keying or through servo-control said preheating step to the actual and instant operating conditions of said engine so as to vary the temperature of the supercharging air as the inverse ratio of the instant rotational speed of said engine and according to the pressure of said air.
Claim 38
Independent Claim
102 words
A device for at least temporarily pre-heating the air supply for a supercharged low-compression ratio internal combustion engine provided by at least one exhaust gas-driven turbo-blower set, wherein the improvement comprises means for temporarily delaying any fuel injection into at least one low-compression cylinder for at least one part of the starting time period of the engine during initial cranking from a stopped condition and means for impeding exhaust gas streaming from said at least one low-compression cylinder for at least partially retaining a controlled amount of residual working gases in said at least one of the low-compression cylinders of said engine.
Claim 39
Independent Claim
102 words
A device for at least temporarily pre-heating the air supply for a supercharged low-compression ratio internal combustion engine provided by at least one exhaust gas-driven turbo-blower set, wherein the improvement comprises means for temporarily delaying any fuel injection into at least one low-compression cylinder for at least one part of the starting time period of the engine during initial cranking from a stopped condition and means for impeding exhaust gas streaming from said at least one low-compression cylinder for at least partially retaining a controlled amount of residual working gases in said at least one of the low-compression cylinders of said engine.
Claim 40
Dependent Claim
142 words
Device for at least temporarily pre-heating the air supply for a supercharged low-compression ratio internal combustion engine at start and low-load conditions, including at least one exhaust gas-driven turbo-blower set, wherein the improvement comprises means for temporarily delaying any fuel injection into at least one cylinder for at least one part of the starting time period of the engine during initial cranking from a stopped condition and a selectively adjustable control member mounted in the exhaust gas duct system at a position for impeding exhaust gas streaming from said at least one low-compression cylinder for at least partially retaining a controlled amount of residual working gases in said at least one of the low-compression cylinders, said control member being located at any position between said at least one cylinder and the upstream end of the drive turbine of the supercharging turbo-blower set.
Claim 41
Dependent Claim
142 words
Device for at least temporarily pre-heating the air supply for a supercharged low-compression ratio internal combustion engine at start and low-load conditions, including at least one exhaust gas-driven turbo-blower set, wherein the improvement comprises means for temporarily delaying any fuel injection into at least one cylinder for at least one part of the starting time period of the engine during initial cranking from a stopped condition and a selectively adjustable control member mounted in the exhaust gas duct system at a position for impeding exhaust gas streaming from said at least one low-compression cylinder for at least partially retaining a controlled amount of residual working gases in said at least one of the low-compression cylinders, said control member being located at any position between said at least one cylinder and the upstream end of the drive turbine of the supercharging turbo-blower set.
Claim 42
Dependent Claim
26 words
A device according to claim 38, wherein said control member is positioned in a branch-pipe connecting one engine cylinder to its associated exhaust manifold communicating therewith.
Claim 43
Dependent Claim
40 words
A device according to claim 38, wherein said control member is provided at some point lying towards the downstream end portion of at least one exhaust manifold on either side of at least one drive turbine of supercharging turbo-blower means.
Claim 44
Dependent Claim
15 words
A device according to claim 38, comprising selectively adjustable means for delaying the fuel injection.
Claim 45
Dependent Claim
44 words
A device according to claim 41, comprising self-acting control means for operating and triggering the fuel injection in time-delayed relationship and keyed and phaselocked in follow-up relationship to the instant temperature of the air contained within at least one working cylinder of said engine.
Claim 46
Dependent Claim
55 words
A device according to claim 38, for an engine provided at least with supercharging air aftercooler means, comprising fuel burning means mounted on at least one intake manifold of said engine at a position located between the upstream inlet end portion of said intake manifold and some point towards the outlet of said aftercooler means.
Claim 47
Dependent Claim
100 words
A device according to claim 38, for an engine supercharged by at least one exhaust gas-driven turbo-blower set having at least supercharging air aftercooler means the inner coolant piping of which within the heat exchanger forming said aftercooler means is mounted in series in the circuit of a cold source of coolant, comprising a circuit of a hot source of heating fluid branched off across said piping in by-passing relationship through the medium of selectively controllable switching valve means for successively connecting said piping in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 48
Dependent Claim
99 words
A device according to claim 43, for an engine supercharged by at least one exhaust gas-driven turbo-blower set having at least supercharging air aftercooler means the inner coolant piping of which within the heat exchanger forming said aftercooler means is mounted in series in the circuit of a cold source of coolant, comprising a circuit of a hot source of heating fluid branched off across said piping in by-passing relationship through the medium of selectively controllable switching valve means for successively connecting said piping in series to and disconnecting it from said circuit of hot source of heating fluid.
Claim 49
Dependent Claim
65 words
A device according to claim 38, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 50
Dependent Claim
65 words
A device according to claim 43, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 51
Dependent Claim
65 words
A device according to claim 47, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 52
Dependent Claim
65 words
A device according to claim 45, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 53
Dependent Claim
22 words
A device according to claim 38, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 54
Dependent Claim
22 words
A device according to claim 43, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 55
Dependent Claim
22 words
A device according to claim 44, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 56
Dependent Claim
22 words
A device according to claim 45, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 57
Dependent Claim
22 words
A device according to claim 46, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 58
Dependent Claim
22 words
A device according to claim 47, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 59
Dependent Claim
22 words
A device according to claim 48, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 60
Dependent Claim
22 words
A device according to claim 49, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 61
Dependent Claim
55 words
A device according to claim 82, for an engine provided at least with supercharging air aftercooler means, comprising fuel burning means mounted on at least one intake manifold of said engine at a position located between the upstream inlet end portion of said intake manifold and some point towards the outlet of said aftercooler means.
Claim 62
Dependent Claim
100 words
A device according to claim 58, for an engine supercharged by at least one exhaust gas-driven turbo-blower set having at least supercharging air aftercooler means the inner coolant piping of which within the heat exchanger forming said aftercooler means is mounted in series in the circuit of a cold source of coolant, comprising a circuit of a hot source of heating fluid branched off in by-passing relationship across said piping through the medium of selectively controllable switching valve means for successively connecting said piping in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 63
Dependent Claim
65 words
A device according to claim 58, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 64
Dependent Claim
65 words
A device according to claim 59, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 65
Dependent Claim
22 words
A device according to claim 58, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 66
Dependent Claim
22 words
A device according to claim 59, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 67
Dependent Claim
22 words
A device according to claim 60, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 68
Dependent Claim
22 words
A device according to claim 61, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 69
Dependent Claim
100 words
A device according to claim 38, for an engine supercharged by at least one exhaust gas-driven turbo-blower set having at least supercharging air aftercooler means the inner coolant piping of which within the heat exchanger forming said aftercooler means is mounted in series in the circuit of a cold source of coolant, comprising a circuit of a hot source of heating fluid branched off in by-passing relationship across said piping through the medium of selectively controllable switching valve means for successively connecting said piping in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 70
Dependent Claim
65 words
A device according to claim 66, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 71
Dependent Claim
22 words
A device according to claim 66, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 72
Dependent Claim
22 words
A device according to claim 67, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 73
Dependent Claim
65 words
A device according to claim 38, for an engine with a cooling fluid circuit for cooling the engine cylinders, wherein said cooling fluid circuit comprises selectively controllable switching valve means connected to a circuit of a hot source of heating fluid for successively connecting said cooling fluid circuit directly in series to and disconnecting it from said circuit of said hot source of heating fluid.
Claim 74
Dependent Claim
22 words
A device according to claim 70, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 75
Dependent Claim
22 words
A device according to claim 38, comprising an enclosure surrounding said engine and provided with means for heating and receiving hot air.
Claim 76
Dependent Claim
39 words
A device according to claim 38, further comprising automatic follow-up and servo-control means for keying and phase-locking the means for operating and controlling the supercharging air preheating means according to the actual and instant operating conditions of said engine.
Claim 77
Dependent Claim
20 words
A device according to claim 38, wherein said selectively adjustable flow rate control member is a rotary throttle valve element.
Claim 78
Dependent Claim
19 words
A device according to claim 38, wherein said selectively adjustable flow rate control member is a swing flap element.
Claim 79
Dependent Claim
28 words
A device according to claim 38, wherein said selectively adjustable flow rate control member is a sliding damper element formed with at least one calibrated thoroughfare passageway hole.
Claim 80
Independent Claim
340 words
A method of at least temporarily assisting and promoting the ignition conditions at the start of a cold supercharged low-compression ratio Diesel engine in particular by raising the final compression temperature through at least partially withholding a controlled amount of residual working gases in each cylinder by selectively impeding the exhaust gas streaming therefrom and reducing the exhaust gas flow rate through artificial pressure loss generation in the flow path of said exhaust gases between each engine cylinder and an exit where said exhaust gases are discharged to the outside, in order to raise the back-pressure on said exhaust gas coming from said cylinder thereby increasing the residual gas content therein, wherein the improvement comprises, in the case of a highly supercharged Diesel engine, the steps of: initially cranking said engine from the stopped condition while temporarily delaying any fuel injection into its cylinders for at least one part of the starting time period of the engine and at the same time restraining and hindering said exhaust flow therefrom, cranking said engine for its starting period by drivingly rotating the same mechanically through its crank shaft for a small number of operating cycles corresponding to about ten compressions, i.e., twenty revolutions for a four-stroke engine without injecting fuel so as to drive said engine for several operating cycles without any ignition and combustion therein and with each cylinder being only filled and working with pure precompressed air drawn therein and exhausted therefrom so that said cylinders be incompletely emptied and scavenged, thereby causing air to at least partially remain and be retained and heated up through further compression within each cylinder and thus to supply and give off heat to the incoming fresh air charge sucked in; then after said engine has thus been warmed up to some extent, allowing fuel to be injected into each cylinder at the end of each compression stroke and to be burnt therein; and restoring free unimpeded exhaust gas flow conditions as soon as the engine has started and begun to run by itself.
Claim 81
Independent Claim
340 words
A method of at least temporarily assisting and promoting the ignition conditions at the start of a cold supercharged low-compression ratio Diesel engine in particular by raising the final compression temperature through at least partially withholding a controlled amount of residual working gases in each cylinder by selectively impeding the exhaust gas streaming therefrom and reducing the exhaust gas flow rate through artificial pressure loss generation in the flow path of said exhaust gases between each engine cylinder and an exit where said exhaust gases are discharged to the outside, in order to raise the back-pressure on said exhaust gas coming from said cylinder thereby increasing the residual gas content therein, wherein the improvement comprises, in the case of a highly supercharged Diesel engine, the steps of: initially cranking said engine from the stopped condition while temporarily delaying any fuel injection into its cylinders for at least one part of the starting time period of the engine and at the same time restraining and hindering said exhaust flow therefrom, cranking said engine for its starting period by drivingly rotating the same mechanically through its crank shaft for a small number of operating cycles corresponding to about ten compressions, i.e., twenty revolutions for a four-stroke engine without injecting fuel so as to drive said engine for several operating cycles without any ignition and combustion therein and with each cylinder being only filled and working with pure precompressed air drawn therein and exhausted therefrom so that said cylinders be incompletely emptied and scavenged, thereby causing air to at least partially remain and be retained and heated up through further compression within each cylinder and thus to supply and give off heat to the incoming fresh air charge sucked in; then after said engine has thus been warmed up to some extent, allowing fuel to be injected into each cylinder at the end of each compression stroke and to be burnt therein; and restoring free unimpeded exhaust gas flow conditions as soon as the engine has started and begun to run by itself.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |