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1. 发明公开

EP3361046A1 ROTARY INTERNAL COMBUSTION ENGINE WITH UNEQUAL VOLUMETRIC RATIOS 有权
公开(公告)号：EP3361046A1
公开(公告)日：2018-08-15
申请号：EP18156181.2
申请日：2018-02-09
申请人： Pratt & Whitney Canada Corp.
发明人： DUSSAULT, Serge , JULIEN, Andre , LANKTREE, Michael , SCHULZ, Edwin
IPC分类号： F01C1/22 , F01C11/00 , F01C21/10 , F01C21/18
CPC分类号： F02B55/14 , F01C1/22 , F01C11/002 , F01C11/008 , F01C20/18 , F01C21/0809 , F01C21/104 , F01C21/18 , F01C2021/125 , F01C2021/1606 , F02B53/08 , F02B55/02 , F02B55/08 , F02B2053/005 , F04C2250/20
摘要： A rotary internal combustion engine (12) including a rotor assembly (11) where at least a first and a second combustion chambers (40) have unequal theoretical volumetric ratios. Also, a rotary internal combustion engine (12) including first and second rotor assemblies (11a,11b) where at least one of the combustion chambers (40) of the first rotor assembly (11a) and at least one of the combustion chambers (40) of the second rotor assembly (11b) have unequal effective volumetric compression ratios and/or unequal effective volumetric expansion ratios.

2. 发明公开

EP3569851A1 METHOD AND SYSTEM FOR NON-FUNCTIONAL COMBUSTION CHAMBER DETECTION 有权
公开(公告)号：EP3569851A1
公开(公告)日：2019-11-20
申请号：EP19174747.6
申请日：2019-05-15
申请人： Pratt & Whitney Canada Corp.
发明人： LANKTREE, Michael , GAGNON - MARTIN, David , VILLENEUVE, Bruno
IPC分类号： F02D41/22 , F02D41/14 , F02D41/38 , F02D41/40 , F02B53/00 , F02B53/02 , F01C1/22 , G01M15/04 , G01M15/11
摘要： Systems (400) and methods (300; 300') for detecting at least one non-functional combustion chamber (110) of an engine (12) comprising a plurality of combustion chambers (110) are described herein. In response to detecting a partial output power loss of the engine (12), one of the plurality of combustion chambers (110) is assessed by monitoring an engine parameter indicative of an output power of the engine (12), determining whether a change in the engine (12) parameter has occurred, when the change has occurred, determining that the combustion chamber (110) is functional, and when no change has occurred, determining that the combustion chamber (110) is non-functional and discontinuing fuel injection to the non-functional combustion chamber (110).

3. 发明公开

EP3299607A1 METHOD OF OPERATING AN ENGINE HAVING A PILOT SUBCHAMBER AT PARTIAL LOAD CONDITIONS 有权
标题翻译：在部分负载条件下操作具有先导子室的发动机的方法
公开(公告)号：EP3299607A1
公开(公告)日：2018-03-28
申请号：EP17192456.6
申请日：2017-09-21
申请人： Pratt & Whitney Canada Corp.
发明人： LANKTREE, Michael , SCHULZ, Edwin
IPC分类号： F02D41/04 , F02D41/30 , F02D41/40 , F02B19/10
摘要： A method of operating an internal combustion engine (100) having pilot subchambers (142) communicating with main combustion chambers (122), the internal combustion engine (100) configured in use to deliver a main fuel injection of a maximum quantity of fuel to the main combustion chambers (122) when the internal combustion engine (100) is operated at maximum load. The method includes delivering a pilot fuel injection of at most 10% of the maximum quantity to the pilot subchambers (142), igniting the pilot fuel injection within the pilot subchambers (142), directing the ignited fuel from the pilot subchambers (142) to the main combustion chambers (122), and delivering a main fuel injection of a main quantity of fuel to at least one of the main combustion chambers (122) receiving the ignited fuel, with the main quantity being at most 10% of the maximum quantity.
摘要翻译：一种操作具有与主燃烧室（122）连通的先导子室（142）的内燃机（100）的方法，所述内燃机（100）被构造用于将最大量的燃料的主燃料喷射当内燃机（100）在最大负载下工作时，主燃烧室（122）。该方法包括向引燃子腔室（142）传送至多为最大量的10％的引燃燃料喷射，点燃引燃子腔室（142）内的引燃燃料喷射，将引燃的燃料从引导子腔室（142）引导至主燃烧室（122），并且将主要量燃料的主燃料喷射输送到接收点燃的燃料的至少一个主燃烧室（122），主要量为最大量的至多10％。

4. 发明公开

EP3892818A1 ROTARY INTERNAL COMBUSTION ENGINE WITH UNEQUAL VOLUMETRIC RATIOS 有权
公开(公告)号：EP3892818A1
公开(公告)日：2021-10-13
申请号：EP21173409.0
申请日：2018-02-09
申请人： PRATT & WHITNEY CANADA CORP.
发明人： DUSSAULT, Serge , JULIEN, Andre , LANKTREE, Michael , SCHULZ, Edwin
IPC分类号： F01C1/22 , F01C11/00 , F01C21/10 , F01C21/18
摘要： A rotary internal combustion engine (12) including a rotor assembly (11) where at least a first and a second combustion chambers (40) have unequal theoretical volumetric ratios. Also, a rotary internal combustion engine (12) including first and second rotor assemblies (11a,11b) where at least one of the combustion chambers (40) of the first rotor assembly (11a) and at least one of the combustion chambers (40) of the second rotor assembly (11b) have unequal effective volumetric compression ratios and/or unequal effective volumetric expansion ratios.

5. 发明授权

EP3299607B1 METHOD OF OPERATING AN ENGINE HAVING A PILOT SUBCHAMBER AT PARTIAL LOAD CONDITIONS 有权
公开(公告)号：EP3299607B1
公开(公告)日：2020-04-15
申请号：EP17192456.6
申请日：2017-09-21
申请人： Pratt & Whitney Canada Corp.
发明人： LANKTREE, Michael , SCHULZ, Edwin
IPC分类号： F02D41/04 , F02D41/30 , F02D41/40 , F02B19/10

6. 发明公开

EP3412887A1 INTERNAL COMBUSTION ENGINE COOLING SYSTEM 审中-公开
公开(公告)号：EP3412887A1
公开(公告)日：2018-12-12
申请号：EP18176867.2
申请日：2018-06-08
申请人： Pratt & Whitney Canada Corp.
发明人： JULIEN, Andre , LANKTREE, Michael , DUSSAULT, Serge
IPC分类号： F02B29/04 , F01P7/16 , F01P3/18
CPC分类号： F02B29/0412 , F01P7/165 , F01P2003/185 , F01P2025/42 , F01P2060/02 , F02B29/0418 , F02B29/0431 , F02B29/0443 , F02B29/0493 , F02B41/10 , F02B2053/005
摘要： A cooling system (38) for an internal combustion engine (12) comprises a fluid circuit (40) having an intercooler (42A), a main cooler (42B) and a precooler (42C). The intercooler (42A) is configured for receiving coolant and configured for heat exchange relation between the coolant and engine compressed air (20A). The main cooler (42B) is configured for receiving the coolant from the intercooler (42A) and the internal combustion engine (12) and configured for selectively delivering a first portion of the coolant from the main cooler (42B) to the precooler (42C). The precooler (42C) is configured to deliver a flow of the coolant to the intercooler (42A). The main cooler (42B) and the precooler (42C) are configured for cooling the coolant by heat exchange with at least one cooling flow.

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