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公开(公告)号：EP2066908A2
公开(公告)日：2009-06-10
申请号：EP07839056.4
申请日：2007-09-26
CPC分类号： F15B20/00 , B60K6/12 , F04B49/03 , F15B1/024 , F16H61/4192 , F16H61/421 , F16H61/439 , Y02T10/6208
摘要： A fail-safe system for a hybrid vehicle employing an over-center variable-displacement hydraulic motor includes an actuator configured to stroke the motor to a zero angle if each of two control ports is supplied with fluid at an equal pressure. A control valve is configured, in the event of loss of power to the valve, to default to a position in which high-pressure fluid is supplied to both control ports. A pilot-controlled check valve is coupled between high- and low-pressure ports of the motor such that, during normal operation, passage of fluid through the check valve from the high-pressure port to the low-pressure port is checked, while passage of fluid through the check valve from the second port to the first port is enabled. When the pilot control is activated, passage of fluid in the opposite direction is also enabled.
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公开(公告)号：EP1522692B1
公开(公告)日：2008-07-09
申请号：EP05000548.7
申请日：2002-08-13
CPC分类号： F04B17/05 , F02B1/12 , F02B71/04 , F04B19/003
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公开(公告)号：EP1797303A2
公开(公告)日：2007-06-20
申请号：EP05786502.4
申请日：2005-08-15
发明人： HAUGEN, David, James
CPC分类号： F02C6/12 , F01D9/026 , F01D17/141 , F01D17/143 , F01D17/146 , F01D17/165 , F02B29/083 , F02B37/001 , F02B37/004 , F02B37/013 , F02B37/025 , F02B37/18 , F02B37/183 , F02B37/22 , F02C3/13 , F02D9/06 , F02M26/08 , F02M26/10 , F02M26/23 , F05D2220/40 , Y02T10/144 , Y02T10/146
摘要： The present invention recovers the loss of a portion of exhaust energy conventionally occurring in bypassing exhaust flow from one stage to another in a multi-stage turbocharging system. The method of preserving such exhaust energy is through converting a portion of the exhaust energy of the bypassed flow from pressure to kinetic energy (velocity) by passing the bypassed flow through a VGT vane outlet or other variable geometry valve/nozzle, and then not allowing the accelerated flow to dissipate energy before reaching the subsequent stage's turbine wheel, where the accelerated flow may then be converted to a mechanical rotational force by the lower pressure turbine's wheel. Preferred hardware for achieving the object of the invention is also set forth, including a preferred two-volute low pressure turbocharging system with a VGT mechanism in one turbine volute only, or an alternative low pressure turbocharger with two low pressure turbines on a common shaft.
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公开(公告)号：EP1448879A1
公开(公告)日：2004-08-25
申请号：EP02797102.7
申请日：2002-11-13
IPC分类号： F02B75/04
CPC分类号： F02D41/3041 , F02B1/12 , F02B75/042 , Y02T10/128
摘要： An engine has a plurality of combustion cylinders with a first piston (3) reciprocably mounted in each of the combustion cylinders in the conventional manner. The engine head has, in communication with each of the combustion cylinders, a cylindrical recess (14) containing a reciprocably mounted second piston (17). On the side of the second piston (17) opposite the combustion chamber is a control chamber (19) with inlets and outlets for controlling movement of the second piston (17). The second piston (17) is used to increase the compression ratio without appreciably reducing the expansion ratio. Alternatively, the second piston (17) may be used as a pump to pump fluid from the control chamber (19). In yet another alternative method of operation, the second piston (17) can be driven outward within the cylindrical recess (14) to an extent which varies in accordance with power demand, thereby varying the compression ratio in accordance with the power demand.
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公开(公告)号：EP1198669A1
公开(公告)日：2002-04-24
申请号：EP00950425.9
申请日：2000-07-19
CPC分类号： B01D53/9495 , B01D53/9422 , B01D53/945 , B01D2258/012 , F01N3/023 , F01N3/0842 , F01N13/009 , F01N2340/06 , F02B29/0406 , F02B37/00 , F02D41/005 , F02D41/0052 , F02D41/0275 , F02D41/029 , F02D41/1452 , F02D41/146 , F02D41/1466 , F02M26/06 , F02M26/07 , F02M26/10 , F02M26/15 , F02M26/20 , F02M26/23 , F02M26/24 , F02M26/34 , F02M26/35 , F02M26/44 , F02M26/46 , Y02T10/144 , Y02T10/22 , Y02T10/47
摘要： A diesel-cycle engine (22) with a unique exhaust gas recirculation system includes a plurality of cylinders with fuel feed for each of the cylinders and an intake manifold (21) for distributing intake air to each of the cylinders for combustion of the fuel charges therein with generation of exhaust gas. The exhaust gas is discharged to ambient atmosphere through an exhaust line (15) with a gas turbine (27) therein. The gas turbine drives an intake compressor (19) which serves to compress the intake air. An engine controller controls a valve (14) regulating the amount of exhaust gas recirculation responsive to sensed concentration of an exhaust gas component.
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公开(公告)号：EP1196682A1
公开(公告)日：2002-04-17
申请号：EP00947016.2
申请日：2000-07-06
IPC分类号： F02B43/08
摘要： An automotive power plant includes an internal combustion engine (18) and a heat exchanger (4) for vaporizing fuel to the internal combustion engine (18) utilizing heat from the combustion exhaust gas. The vaporized fuel may be fed to a combustion cylinder (7) containing the compressed gas produced by a compression stroke. Alternatively, the vaporized gas may be fed to a dedicated expander (20) for extracting work therefrom and then fed to the internal combustion engine (18).
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公开(公告)号：EP0854975A1
公开(公告)日：1998-07-29
申请号：EP96936011.0
申请日：1996-09-27
CPC分类号： F02B41/00
摘要： A drive train includes an engine having a power cylinder (12) with a power piston (4). Fuel is fed into a combustion chamber (2) located within the power cylinder at one side of the power piston. Intake and exhaust valves (16, 18), in fluid communication with the combustion chamber serve, respectively, to allow intake of air during an intake stroke of the power piston and exhaust of combustion products during an exhaust stroke of the power piston. A floating piston (5) at least partially closes the combustion chamber opposite the power piston and is mounted for reciprocating motion relative to the combustion chamber. The reciprocating motion of the floating piston includes a pressure relieving stroke in which the floating piston moves away from the combustion chamber responsive to a predetermined pressure being produced within the combustion chamber by combustion, to reduce the peak combustion pressure.
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公开(公告)号：EP1451500B1
公开(公告)日：2012-08-01
申请号：EP02780646.2
申请日：2002-11-13
CPC分类号： F15B1/22 , B60K6/12 , F15B1/18 , F15B2201/205 , F15B2201/3152 , F15B2201/411 , F15B2201/43 , F15B2201/51 , F15B2201/615 , F16K31/1221 , F16K31/1225 , Y02T10/6208 , Y10T137/7782
摘要： A hydraulic accumulator (14) is equipped with a novel shut-off valve. The shut off-valve includes a valve body (21) having a cylindrical hollow with a valve seat (37) surrounding one end. The main piston (24) including a piston head has a central opening (30) and is slidably mounted within the cylindrical hollow of the valve body. A poppet valve (22) has a valve head which mates with the valve seat and a valve stem which extends through the central opening of the piston to guide axial movement of the poppet valve relative to the piston. A spring (23) is mounted between the valve head and the main piston head for urging the valve head away from the piston head. A control valve (27) moves the piston relative to the valve body between open and closed positions responsive to signals from a computer (72) which signals valve closing upon determination that flow rate through the valve exceeds a maximum period. The spring between the poppet valve head and the piston head exerts a force approximately equal to that of a pressure drop across the poppet valve at a predetermined maximum flow rate.
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公开(公告)号：EP1856437A2
公开(公告)日：2007-11-21
申请号：EP06748297.6
申请日：2006-03-06
IPC分类号： F16L55/04
CPC分类号： F15B1/024 , B60K6/12 , F15B1/24 , F15B2201/205 , F15B2201/312 , F15B2201/4053 , Y02T10/6208
摘要： A lightweight, low permeation, piston-in-sleeve high-pressure accumulator is provided. The accumulator includes a cylindrical composite pressure vessel with two integral rounded ends. A piston slidably disposed in a thin nonpermeable internal sleeve in the accumulator separates two chambers, one adapted for containing a working fluid and the other adapted for containing gas under pressure. Working fluid is provided in a volume between the nonpermeable internal sleeve and the composite pressure vessel wall. Further means are provided for withstanding harmful effects of radial flexing of the composite vessel wall under high pressures, and from stresses present in use in mobile applications such as with a hydraulic power system for a hydraulic hybrid motor vehicle. A method for pre-charging the device is also presented.
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10.发明公开METHODS OF OPERATION FOR CONTROLLED TEMPERATURE COMBUSTION ENGINES USING GASOLINE-LIKE FUEL 审中-公开操作程序燃料BENZINARTIGEM规则温内燃机
公开(公告)号：EP1695233A1
公开(公告)日：2006-08-30
申请号：EP04813169.2
申请日：2004-12-07
CPC分类号： F02D41/008 , F02B1/12 , F02B29/0493 , F02D35/023 , F02D41/3035 , F02D2200/0406 , F02D2200/0414 , F02M26/06 , F02M26/25 , F02M26/47 , Y02T10/128 , Y02T10/146
摘要： The present invention provides a multicylinder homogeneous charge, compression ignition (HCCI) type engine, also known as a premixed charge compression ignition (PCCI) engine, with a control system designed to maintain stable, efficient, low emission HCCI combustion during engine transitions from one speed/load operating point to another speed/load operating point. HCCI combustion control in the invention is obtained by adjusting specified 'engine operating parameters' that influence the crank angle location of the combustion event (viz., charge-air intake temperature, intake pressure (boost), charge-air oxygen concentration, engine cooling, and engine compression ratio), in coordination with adjustments in fuel quantity, by the following preferred method: (1) determining an existing 'combustion parameter' value such as the maximum rate of pressure rise (MRPR), for each cycle of each cylinder, (2) adjusting an engine operating parameter of the engine to effect a change in said combustion parameter value, (3) thereafter adjusting an engine 'control parameter' (e.g., commanded fuel quantity) to each cylinder, responsive to the effect of the adjusted engine operating condition, to maintain a desired target for the combustion parameter value, and (4) individually adjusting cooling, heating and/or fuel command to individual 'outlier' (deviating) cylinders, to achieve uniform combustion. Preferred control strategies to maximize HCCI combustion stability are also set forth, such as averaging sensed combustion parameter values and/or ignoring combustion parameter values within a specified dead band region so as to ignore cycle-to-cycle random variations of the combustion parameter values at stable HCCI operating points. Additional methods to minimize such engine combustion variability include increasing intake pressure (boost) and controlling combustion chamber cooling, and are additionally described.
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