Back to results
US 7,742,866 B2Granted
Fuel volatility compensation for engine cold start speed control
AssigneeGM Global Technology Operations LLC
InventorsKurt D. McLain, Wenbo Wang
Life of this patent
Estimating the term…
Abstract
A fuel control system includes devices that generate parameter signals. The parameter signals include an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal. A modification module generates a modification signal based on the parameter signals. A control module compensates for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on the modification signal.
Claims20
A fuel control system comprising:
- a plurality of devices generating a plurality of parameter signals comprising an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal;
- a modification module generating a modification signal based on said plurality of parameter signals;
- and
- a control module compensating for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on said modification signal.
1 more element
A fuel control system comprising:
- an engine runtime indicator generating an engine run time signal;
- an engine load module generating said engine load signal
- a temperature sensor generating a temperature signal;
- a barometric pressure sensor generating a barometric pressure signal;
- and
- a control module compensating for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on said engine run time signal, said engine load signal, said temperature signal, and said barometric pressure signal.
3 more elements
A fuel control method comprising:
- generating a plurality of parameter signals comprising an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal;
- generating a plurality of modification signals based on said plurality of parameter signals;
- generating a combined signal based on said plurality of modification signals;
- and
- adjusting a current idle speed by adjusting a current air/fuel mixture of an engine based on said combined signals.
2 more elements
Dependencies are inferred from the claim text.