Systems and methods for ignition coil multiplexing in a pre-chamber system
A technology of ignition coil and pre-combustion chamber, which is applied in the direction of engine ignition, forward/reverse ignition, spark ignition controller, etc., which can solve the problems of increasing the amount of controller processing resources, increasing production and maintenance costs, etc.
Pending Publication Date: 2021-08-13
FORD GLOBAL TECH LLC
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Problems solved by technology
However, including additional spark plugs in each cylinder typically requires as many as twice as many ignition coils, which can increase production and repair costs
Additionally, each ignition coil may require a separate communication channel with the vehicle controller, which may increase the amount of controller processing resources used during engine operation
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[0023] The following description relates to systems and methods for operating an engine having a multiplexed pre-chamber and main chamber ignition system. Each cylinder of the engine may have a cylinder configuration that includes a main chamber spark plug coupled directly to the cylinder and an active prechamber including a fuel injector, a prechamber spark plug, and an air injector, such as figure 1 shown. Additionally, the ignition system may be configured such that one ignition coil provides voltage to both the pre-chamber spark plug of the first cylinder and the main chamber spark plug of the second cylinder, as in figure 2 shown. To improve engine performance, the image 3 A method of operating an ignition system having multiplexed ignition coils to provide prechamber and / or main chamber spark ignition based on engine operating conditions. For example, the pre-chamber can be operated to Figure 4 method to provide an ignition source to the cylinder. Figure 5A to F...
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The invention provides systems and methods for ignition coil multiplexing in a pre-chamber system. Methods and systems are provided for multiplexing ignition signals in an engine system based on engine operating conditions, each cylinder of the engine system including a main chamber spark plug and a pre-chamber system. In one example, a method may include multiplexing spark signals to a first spark plug and a second spark plug, the first spark plug coupled to a pre-chamber of a first cylinder and the second spark plug coupled to a main chamber of a second cylinder. In this way, one ignition coil may be used to actuate two different spark plugs coupled to separate cylinders.
Description
technical field [0001] The present description generally relates to methods and systems for an engine having a pre-chamber system. Background technique [0002] Internal combustion engines combust an air / fuel mixture within cylinders to produce torque, which can be used to propel a vehicle. In some such engines, an ignition spark is used to ignite the air-fuel mixture within each cylinder during the compression stroke. For example, each cylinder may include a spark plug for directly igniting the air-fuel mixture within the cylinder. In other examples, the air-fuel mixture within the cylinder may be ignited by a jet of hot gas and flame from a pre-combustion chamber (referred to herein as a "pre-chamber"). The prechamber may be a walled chamber located in the clearance volume of the cylinder and may contain the spark plug, O 2 Or air injectors as well as fuel injectors. During engine operation, a first air-fuel mixture is introduced into the pre-chamber and a second air-f...
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Login to View More IPC IPC(8): F02P5/15F02P15/02F02B19/10F02B19/12F02D43/00
CPCF02P5/1502F02P15/02F02B19/1023F02B19/108F02D37/02F02B19/12F02B2023/085F02D41/20Y02T10/12F02P5/045F02P3/0407F02P5/145F02D2200/021F02D2200/101F02P15/08F02P5/1506F02D41/1454F02P3/04F02D2200/0406
Inventor 克里斯·保罗·格鲁格拉迈克尔·达米安·切卡拉
Owner FORD GLOBAL TECH LLC