Patent US6640754B1 successfully refreshed from Google Patents.
US6640754B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition timing system for homogeneous charge compression engine
Assignee: Yamaha Motor Co Ltd
•
Filing: 2000-09-14
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Granted: 2003-11-04
•
Expires: 2020-09-14
Abstract
Abstract A method for controlling the start of combustion in an homogeneous charge compression engine includes forming an substantially homogeneous air/fuel charge. At least the air of the air/fuel charge is introduced into the combustion chamber through an intake port. When the air/fuel charge auto-ignites is controlled by adjusting the pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber. The air/fuel charge is compressed and the air/fuel charge is auto-ignited due to the compression of the air/fuel charge.
Inventors
- 👤 Minoru Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:13
CPC Classifications
F; F02; F02B; F02B1/00; F02B1/12; F02D; F02D13/00; F02D13/02; F02D13/0223; F02D13/0226; F02D13/023; F02D13/0234; F02D41/00; F02D41/0002; F02D41/30; F02D41/3011; F02D41/3017; F02D41/3035; F02D2013/0296; F02D2041/001; F02D2200/00; F02D2200/02; F02D2200/023; F02D2200/04; F02D2200/0404; F02D2200/0406; F02D2200/0414; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 82
Claim 1
Independent Claim
200 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; advancing the auto ignition of the air/fuel charge by increasing a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; and auto-igniting the air/fuel charge due to the compression of the air/fuel charge.
Claim 2
Independent Claim
200 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; advancing the auto ignition of the air/fuel charge by increasing a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; and auto-igniting the air/fuel charge due to the compression of the air/fuel charge.
Claim 3
Dependent Claim
27 words
The method described in claim 1 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 4
Dependent Claim
31 words
The method described in claim 1 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 5
Dependent Claim
27 words
The method described in claim 3 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 6
Dependent Claim
12 words
The method described in claim 1 further comprising determining an auto-ignite time.
Claim 7
Dependent Claim
16 words
The method described in claim 5 , wherein determining an auto-ignite time involves sensing engine speed.
Claim 8
Dependent Claim
27 words
The method described in claim 5 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 9
Dependent Claim
31 words
The method described in claim 5 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 10
Dependent Claim
27 words
The method described in claim 8 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 11
Dependent Claim
22 words
The method described in claim 1 , further comprising determining a target pressure differential between the intake port and the combustion chamber.
Claim 12
Dependent Claim
21 words
The method described in claim 10 , wherein determining a target pressure differential involves sensing at least one engine running parameter.
Claim 13
Dependent Claim
51 words
The method described in claim 11 , wherein determining a target pressure differential involves sensing at least one of a group of engine running parameters consisting of an intake air temperature, an intake air pressure, an engine coolant temperature, engine lubricant temperature, an engine speed, and an intake air throttle position.
Claim 14
Dependent Claim
27 words
The method described in claim 10 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 15
Dependent Claim
31 words
The method described in claim 10 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 16
Dependent Claim
27 words
The method described in claim 14 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 17
Dependent Claim
38 words
The method described in claim 10 , wherein determining a target pressure differential involves sensing an intake air pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge.
Claim 18
Dependent Claim
24 words
The method described in claim 1 , wherein controlling when the air/fuel charge auto-ignites comprises adjusting a compression ratio of the internal combustion engine.
Claim 19
Dependent Claim
24 words
The method described in claim 17 , wherein adjusting the compression ratio of the internal combustion engine comprises adjusting when the intake valve closes.
Claim 20
Dependent Claim
27 words
The method described in claim 17 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 21
Dependent Claim
31 words
The method described in claim 17 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 22
Dependent Claim
27 words
The method described in claim 20 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 23
Dependent Claim
28 words
The method of claim 1 , wherein controlling when the air/fuel charge auto-ignites and auto-igniting the air/fuel charge occurs when said engine is operating at a low load.
Claim 24
Dependent Claim
27 words
The method described in claim 22 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 25
Dependent Claim
31 words
The method described in claim 22 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 26
Dependent Claim
27 words
The method described in claim 24 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 27
Dependent Claim
29 words
The method of claim 22 , further comprising igniting the air/fuel charge with a spark plug when said engine is operating at a load greater than said low load.
Claim 28
Dependent Claim
27 words
The method described in claim 26 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 29
Dependent Claim
31 words
The method described in claim 26 , wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 30
Dependent Claim
27 words
The method described in claim 28 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 31
Dependent Claim
19 words
The method described in claim 1 , wherein forming a substantially homogeneous air/fuel charge occurs within said combustion chamber.
Claim 32
Dependent Claim
19 words
The method described in claim 1 , wherein forming a substantially homogeneous air/fuel charge occurs within said intake passage.
Claim 33
Dependent Claim
25 words
The method described in claim 1 , wherein forming a substantially homogeneous air/fuel charge occurs within said air supply system upstream of said intake passage.
Claim 34
Dependent Claim
20 words
The method described in claim 1 additionally comprising retarding the auto-ignition of the air/fuel charge by decreasing the pressure differential.
Claim 35
Independent Claim
265 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; controlling when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; auto-igniting the air/fuel charge due to the compression of the air/fuel charge, further comprising; and determining a target pressure differential between the intake port and the combustion chamber, wherein determining a target pressure differential involves sensing an intake air pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 36
Independent Claim
265 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; controlling when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; auto-igniting the air/fuel charge due to the compression of the air/fuel charge, further comprising; and determining a target pressure differential between the intake port and the combustion chamber, wherein determining a target pressure differential involves sensing an intake air pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 37
Independent Claim
269 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; controlling when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; auto-igniting the air/fuel charge due to the compression of the air/fuel charge, further comprising; and determining a target pressure differential between the intake port and the combustion chamber, wherein determining a target pressure differential involves sensing an intake air pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 38
Independent Claim
269 words
A method for operating an internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, the method comprising: forming a substantially homogenous air/fuel charge; introducing at least the air of the air/fuel charge into the combustion chamber through the intake port; controlling when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber; compressing the air/fuel charge; auto-igniting the air/fuel charge due to the compression of the air/fuel charge, further comprising; and determining a target pressure differential between the intake port and the combustion chamber, wherein determining a target pressure differential involves sensing an intake air pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein adjusting the pressure differential between the intake port and the combustion chamber a further includes adjusting a maximum lift of the intake valve.
Claim 39
Dependent Claim
27 words
The method described in claim 35 , wherein adjusting the pressure differential between the intake port and the combustion chamber includes adjusting when the intake valve opens.
Claim 40
Dependent Claim
152 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, and means for advancing when the air/fuel charge auto-ignites due to compression in the combustion chamber by increasing a pressure differential between the intake port and the combustion chamber when the intake port is open.
Claim 41
Dependent Claim
152 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system, and means for advancing when the air/fuel charge auto-ignites due to compression in the combustion chamber by increasing a pressure differential between the intake port and the combustion chamber when the intake port is open.
Claim 42
Dependent Claim
51 words
The internal combustion engine as in claim 37 , further comprising a spark plug in communication with the combustion chamber and wherein said control system is further configured to ignite the air/fuel charge with said spark plug at high loads and to auto-ignite the air/fuel charge by compression during low loads.
Claim 43
Dependent Claim
25 words
The internal combustion engine as in claim 37 additionally comprising means for retarding the auto ignition of the air/fuel charge by decreasing the pressure differential.
Claim 44
Dependent Claim
155 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to advance when the air/fuel charge auto-ignites by increasing a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber.
Claim 45
Dependent Claim
155 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to advance when the air/fuel charge auto-ignites by increasing a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber.
Claim 46
Dependent Claim
29 words
The internal combustion engine of claim 40 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 47
Dependent Claim
31 words
The internal combustion engine of claim 40 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 48
Dependent Claim
30 words
The internal combustion engine of claim 42 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 49
Dependent Claim
21 words
The internal combustion engine of claim 40 , wherein said control system is also configured to determine a target auto-ignite time.
Claim 50
Dependent Claim
23 words
The internal combustion engine of claim 44 , wherein said control system is configured to determine said auto-ignite time by sensing engine speed.
Claim 51
Dependent Claim
29 words
The internal combustion engine of claim 44 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 52
Dependent Claim
31 words
The internal combustion engine of claim 44 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 53
Dependent Claim
30 words
The internal combustion engine of claim 47 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 54
Dependent Claim
29 words
The internal combustion engine of claim 40 , wherein said control system is also configured to determine a target pressure differential between the intake port and the combustion chamber.
Claim 55
Dependent Claim
28 words
The internal combustion engine of claim 49 , wherein said control system is configured to determine said target pressure differential by sensing at least one engine running parameter.
Claim 56
Dependent Claim
58 words
The internal combustion engine of claim 50 , wherein said control system is configured to determine a target pressure differential by sensing at least one of a group of engine running parameters consisting of an intake air temperature, an intake air pressure, an engine coolant temperature, engine lubricant temperature, an engine speed, and an intake air throttle position.
Claim 57
Dependent Claim
29 words
The internal combustion engine of claim 49 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 58
Dependent Claim
31 words
The internal combustion engine of claim 49 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 59
Dependent Claim
30 words
The internal combustion engine of claim 53 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 60
Dependent Claim
64 words
The internal combustion engine of claim 49 , wherein said induction system includes a charger to increase the pressure of the air of the air/fuel charge and said control system is configured to determine a target pressure differential by sensing an intake air charge pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge.
Claim 61
Dependent Claim
35 words
The internal combustion engine of claim 40 , wherein said control system is configured to control when the air/fuel charge auto-ignites by at least in part adjusting a compression ratio of the internal combustion engine.
Claim 62
Dependent Claim
35 words
The internal combustion engine of claim 56 , wherein said control system is configured to adjust the compression ratio of the internal combustion engine by at least in part adjusting when the intake valve closes.
Claim 63
Dependent Claim
29 words
The internal combustion engine of claim 56 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 64
Dependent Claim
31 words
The internal combustion engine of claim 56 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 65
Dependent Claim
30 words
The internal combustion engine of claim 59 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 66
Dependent Claim
29 words
The internal combustion engine of claim 40 , wherein said control system is configured to auto ignite said air/fuel charge when said engine is operating at a low load.
Claim 67
Dependent Claim
29 words
The internal combustion engine of claim 61 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 68
Dependent Claim
31 words
The internal combustion engine of claim 61 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 69
Dependent Claim
30 words
The internal combustion engine of claim 63 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 70
Dependent Claim
37 words
The internal combustion engine of claim 61 , wherein said control system is also configured to ignite said air/fuel charge with a spark plug when said engine is operating at a load greater than said low load.
Claim 71
Dependent Claim
29 words
The internal combustion engine of claim 65 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 72
Dependent Claim
31 words
The internal combustion engine of claim 65 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 73
Dependent Claim
30 words
The internal combustion engine of claim 67 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
Claim 74
Dependent Claim
30 words
The method described in claim 40 , wherein said fuel supply system and said air supply system is configured to form said substantially homogeneous air/fuel charge within said combustion chamber.
Claim 75
Dependent Claim
30 words
The method described in claim 40 , wherein said fuel supply system and said air supply system are configured to form said substantially homogeneous air/fuel charge within said intake passage.
Claim 76
Dependent Claim
36 words
The method described in claim 40 , wherein said fuel supply system and said air supply system are configured to form said substantially homogeneous air/fuel charge within said air supply system upstream of said intake passage.
Claim 77
Dependent Claim
28 words
The internal combustion engine of claim 40 , wherein the control system is further configured to retard the timing of the auto ignition by reducing the pressure differential.
Claim 78
Dependent Claim
233 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to control when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber wherein said induction system includes a charger to increase the pressure of the air of the air/fuel charge and said control system is configured to determine a target pressure differential by sensing an intake air charge pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 79
Dependent Claim
233 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to control when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber wherein said induction system includes a charger to increase the pressure of the air of the air/fuel charge and said control system is configured to determine a target pressure differential by sensing an intake air charge pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting when the intake valve opens.
Claim 80
Dependent Claim
235 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to control when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber wherein said induction system includes a charger to increase the pressure of the air of the air/fuel charge and said control system is configured to determine a target pressure differential by sensing an intake air charge pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 81
Dependent Claim
235 words
An internal combustion engine comprising at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member, the second member being coupled to an output shaft such that movement of the second member causes the output shaft to rotate, an intake port that is in communication with the combustion chamber and an intake passage and is opened and closed by an intake valve that is actuated by a valve actuating system, a fuel supply system and air supply system configured to provide a substantially homogeneous air/fuel charge, which is comprised of mixed fuel and air, to the combustion chamber, and a control system configured to control the valve actuating system and furthered configured to control when the air/fuel charge auto-ignites by adjusting a pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber wherein said induction system includes a charger to increase the pressure of the air of the air/fuel charge and said control system is configured to determine a target pressure differential by sensing an intake air charge pressure downstream of a charger of the induction system which increases the pressure of the air of the air/fuel charge and wherein said control system is further configured to control when said air/fuel charge auto-ignites by adjusting a maximum lift of the intake valve.
Claim 82
Dependent Claim
30 words
The internal combustion engine of claim 74 , wherein said control system is further configured to control when said air/fuel charge auto-ignites by also adjusting when the intake valve opens.
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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) | 2006-11-03 | 2007-05-05 | 2007-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-11-03 | 2011-05-05 | 2011-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-11-03 | 2015-05-05 | 2015-11-04 | $7700.00 | Window Closed / Lapsed |