Engine operating system and method

Methods and systems for evaluating cylinder pressure profiles in cylinders of an engine are disclosed. In one example, fuel injection timing of engine cylinders is adjusted to improve engine combustion in response to output of one or more pressure sensors installed in engine cylinders. Combustion within a plurality of engine cylinders may be adjusted in response to pressure sensed in a single engine cylinder. 本发明涉及发动机运转系统和方法。公开了用于评估发动机的汽缸中的汽缸压力分布的方法和系统。在个示例中，发动机汽缸的燃料喷射正时响应于被安装在发动机汽缸中的个或多个压力传感器的输出而被调整，以改善发动机燃烧。多个发动机汽缸内的燃烧可以响应于在单个发动机汽缸中感测的压力而被调整。