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1. 发明授权

US5913302A Ignition coil dwell time control system 失效
标题翻译：点火线圈停留时间控制系统
公开(公告)号：US5913302A
公开(公告)日：1999-06-22
申请号：US934475
申请日：1997-09-19
申请人： Mark A. Ruman , Douglas R. Potratz
发明人： Mark A. Ruman , Douglas R. Potratz
IPC分类号： F02B23/10 , F02B75/02 , F02B75/12 , F02B77/04 , F02P3/02 , F02P3/045 , F02P7/03 , F02P9/00
CPC分类号： F02P9/002 , F02B77/04 , F02P3/0456 , F02B2075/025 , F02B2075/125 , F02B23/101 , F02D2041/389 , F02D2400/04 , F02P2017/003 , F02P2017/121 , F02P3/02 , F02P7/035 , Y02T10/123
摘要： A two-stroke direct fuel injected internal combustion engine has an ignition coil dwell time control system. An electronic control unit controls switching of electronic ignition coil drivers in a manner to minimize ignition coil dwell times at medium and high engine speeds where low ignition coil dwell times can be used without sacrificing engine performance. The electronic control unit also implements an intermittent spark plug cleaning strategy to remove carbon deposits from fouled spark plugs. Intermittent cleaning is accomplished during engine operation by periodically raising the ignition coil dwell time to an exaggerated cleaning level for a relatively short period of time (e.g. one minute) after it is determined the spark plug cleaning should occur (e.g. 10 to 20 engine operating hours since previous cleaning).
摘要翻译：二冲程直喷燃油内燃机具有点火线圈停留时间控制系统。电子控制单元控制电子点火线圈驱动器的切换，以便在中等和高发动机转速下最小化点火线圈停留时间，从而可以在不牺牲发动机性能的情况下使用低点火线圈停留时间。电子控制单元还实施间歇火花塞清洁策略，以消除污垢火花塞中的碳沉积物。在确定火花塞清洁应发生之后（例如10至20个发动机运行时间），在发动机运行期间，通过将点火线圈停留时间周期性地提高到相对较短的时间段（例如一分钟）自从以前的清洁）。

2. 发明授权

US5924404A Cylinder-specific spark ignition control system for direct fuel injected two-stroke engine 失效
标题翻译：用于直喷燃油二冲程发动机的气缸特定火花点火控制系统
公开(公告)号：US5924404A
公开(公告)日：1999-07-20
申请号：US957144
申请日：1997-10-24
申请人： Mark A. Ruman , Douglas R. Potratz
发明人： Mark A. Ruman , Douglas R. Potratz
IPC分类号： F02B23/10 , F02B61/04 , F02B75/02 , F02B75/12 , F02B75/18 , F02B75/22 , F02D41/00 , F02D41/34 , F02D41/38 , F02P5/15 , F02P5/00
CPC分类号： F02D41/3818 , F02B61/045 , F02D41/008 , F02D41/34 , F02P5/1512 , F02B2075/025 , F02B2075/125 , F02B2075/1824 , F02B23/101 , F02B75/22 , F02D2400/04 , Y02T10/123 , Y02T10/44 , Y02T10/46
摘要： A direct fuel injected two-stroke engine controls spark ignition timing and/or ignition coil dwell time on a cylinder-specific basis. The engine also preferably controls fuel injection timing and amount and injection/delivery duration on a cylinder-specific basis. Cylinder-specific customization of spark ignition and fuel injection allows better coordination of spark with fuel injection which results in better running quality, lower emissions, etc. Memory in the electronic control unit for the engine preferably includes a high resolution global look-up table that determines global values for spark ignition and fuel injection control based on engine load (e.g. throttle position, manifold air pressure, etc.) and engine speed. Memory in the electronic control unit also includes a plurality of low resolution, cylinder-specific offset value look-up tables from which cylinder-specific offset values for spark ignition and fuel injection can be determined, preferably depending on engine load and engine speed. The offset values are combined with the global values to generate cylinder-specific control signals for spark ignition and fuel injection.
摘要翻译：直喷燃料二冲程发动机以汽缸特定的基础控制火花点火正时和/或点火线圈停留时间。发动机还优选地在气缸特定的基础上控制燃料喷射正时和量和喷射/输送持续时间。火花点火和燃料喷射的气缸特定定制允许更好地协调火花与燃料喷射，这导致更好的运行质量，更低的排放等。用于发动机的电子控制单元中的存储器优选地包括高分辨率全球查找表，基于发动机负载（例如节气门位置，歧管气压等）和发动机转速确定火花点火和燃油喷射控制的全局值。电子控制单元中的存储器还包括多个低分辨率圆柱体偏移值查找表，其中可以根据发动机负载和发动机转速来确定用于火花点火和燃料喷射的气缸专用偏移值。偏移值与全局值组合，以产生用于火花点火和燃料喷射的气缸专用控制信号。

3. 发明授权

US4960398A Stern drive marine propulsion system with automatic trim control and exhaust control 失效
标题翻译：船尾驱动船用推进系统，具有自动调整和排气控制
公开(公告)号：US4960398A
公开(公告)日：1990-10-02
申请号：US291145
申请日：1988-12-28
申请人： Douglas R. Potratz
发明人： Douglas R. Potratz
IPC分类号： B63H20/20 , B63H20/24 , F01N13/08 , F01N13/12
CPC分类号： F01N13/12 , B63H20/20 , B63H20/245 , F01N13/087
摘要： A stern drive marine propulsion system, including an exhaust discharge control mechanism for selectively routing exhaust to an above-water outlet and to a below-water outlet, and an automatic trim control mechanism, is provided with circuitry interconnecting such components. The trim control system and the exhaust control system are selectively interconnectable so that the exhaust control is actuated responsive to operation of the trim control system.
摘要翻译：一种船尾驱动船用推进系统，包括用于将排气选择性地排放到水上出口和水下出口的排气排放控制机构以及自动装饰控制机构，其具有将这些部件相互连接的电路。修剪控制系统和排气控制系统可选择性地互连，使得响应于修剪控制系统的操作而致动排气控制。

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