Browse Publications Technical Papers 890759
1989-02-01

MBT Control Utilizing Crank Angle of Maximum Combustion Pressure 890759

For better power output and fuel economy of a four stroke cycle ignition engine, the ignition timing should preferably be set to the minimum spark advance for best torque (MBT).
It is found that when the ignition timing is set MBT, the crank angle of the maximum combustion pressure (θpmax) usually lies between 12 and 14 deg after top dead center (ATDC) regardless of any engine specifications or operating factors. Therefore, the ignition timing can be controlled to be MBT by using the θpmax.
This paper describes the relationship between the θpmax and MBT by both experimental results and numerical calculations, and MBT control system utilizing θpmax. And the test results by using this system are also described.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

An Adaptive Idle Mode Control System

840443

View Details

TECHNICAL PAPER

Energy Conservation with Increased Compression Ratio and Electronic Knock Control

790173

View Details

TECHNICAL PAPER

Stochastic Knock Detection, Control, Software Integration, and Evaluation on a V6 Spark-Ignition Engine under Steady-State Operation

2014-01-1358

View Details

X