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Application Of Vehicle Communication Network

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1. Introduction
Since the market demands varied over the last 30 years, automotive manufacturers have been focusing on improving users’ driving experience for a long period while developing advanced electronic-based technologies, with respect to requirements such as convenience, safety, fuel efficiency and etc. However, with more functions achieved, a large quantity of wires individually connected to different electronical control units(ECUs) needs to be involved in order to transfer signals from sensors to ECUs, thus making the entire vehicle system significantly complex, heavy, costly and less reliable. This issue was foreseen by engineers and could not be solved properly until the introduction of vehicle communication network in which ECUs interchanges information alone the bus with much less wirings required. Within the following sections, in order to ensure accuracy for final investigation result, a Toyota Prius 2012 model is chosen for researching on how information required is processed by each control unit after being detected by those related sensors. Based upon investigation mentioned, discussion on benefits of using in-vehicle network will be further taken with respect to weight and cost savings.

Part A-Vehicle systems network investigation
2. Control units, sensors and information
This section identifies a number of sensors used by different types of ECU and briefly discusses information each ECU requires for different uses.
2.1 Engine Control Unit (ECU)

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