Simultaneous Control of Air/fuel Ratio and Intake, Exhaust Valve Timing for HCCI Operation TohokuGakuin University

Format:

Conference/Event

Author/Creator:

Ohyama, Yoshishige, author.

Conference Name:

SAE 2003 World Congress & Exhibition (2003-03-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

The control strategies of auto-ignition for homogeneous charge compression ignition and controlled auto ignition operations were investigated using a simple engine model. The fluctuations of auto-ignition characteristics during transients in variable timing of exhaust and intake valves were analyzed. When the valve timing changed stepwise, the characteristics fluctuated and differed slightly from these in steady state conditions because combustion in the prior cycle affected the gas exchange in the next cycle. To reduce such fluctuations, the control strategies of cylinder air mass, residual gas mass, fuel mass, air/fuel ratio were investigated for a simple engine dynamic model (a 4-cylinder, 4-stroke engine with total cylinder stroke volume of 2000 cm3), which could simulate the dynamics of gas exchange during transient valve timing in a wide dynamic range

Notes:

Vendor supplied data

Publisher Number:

2003-01-1084

Access Restriction:

Restricted for use by site license