Transient Correction by Manifold Pressure in a TPS-Free FI System Suzuki Motor Corporation

Format:

Conference/Event

Author/Creator:

Sugimoto, Sugimoto, author.

Conference Name:

SAE/JSAE 2014 Small Engine Technology Conference & Exhibition (2014-11-18 : Pisa, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2014

Summary:

AbstractCost reduction is an important development goal for small motorcycles (1). As a way to reduce costs, we have developed an electronically controlled fuel injection (hereafter FI) system without a throttle position sensor (hereafter TPS). Ordinarily, the high throttle range is controlled and computed by TPS, and the low throttle range by manifold pressure sensor (hereafter MPS). The intake airflow is estimated with consistent high precision regardless of the engine load, and the basic fuel injection is executed accordingly. Also, transient correction monitors the size of TPS changes, to inject fuel immediately when a TPS change equal to or greater than a threshold value is detected. In our development, we replaced these functions with control by MPS. For calculation of basic fuel injection quantity by MPS, we carried on the conventional method. However, MPS transient correction control had some aspects with poor tracking. Thus, we constructed a new form of transient correction control, securing the following points.As a result, by using MPS without TPS, we succeeded in securing good throttle response which is comparable to that of conventional FI systems

Notes:

Vendor supplied data

Publisher Number:

2014-32-0072

Access Restriction:

Restricted for use by site license