Performance with Economy from High Torque-Backup for S.I. Engines

Paper #:
  • 900172

Published:
  • 1990-02-01
Citation:
McInerney, L., "Performance with Economy from High Torque-Backup for S.I. Engines," SAE Technical Paper 900172, 1990, https://doi.org/10.4271/900172.
Author(s):
Pages:
12
Abstract:
This concept offers a potential solution to the problem of satisfying both the market's desire for increased performance and the need for improved fuel economy. The rationale for increasing torque-backup in spark ignition (S.I.) engines is prefaced by a brief review of automotive torque/power characteristics and requirements. A boost control strategy that provides a substantial increase in torque at low engine speeds, without increasing maximum power, is proffered. Examples of applications and the resulting benefits are presented; vehicle acceleration tests are used to quantify performance benefits. Neither fuel economy nor emissions data are presented.
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