INTAKE RUNNER TEMPERATURE DETERMINATION SYSTEMS AND METHODS

• US 20140190448A1
• Filed: 03/13/2013
• Published: 07/10/2014
• Est. Priority Date: 01/07/2013
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Brennan, Daniel G., Matthews, Gregory P., Wiggins, Layne K.
• Granted Patent: US 9,458,779 B2
• Time in Patent Office: Days
• US Class Current: 123/350
• CPC Class Codes: F02D 2041/1432 the system including a filter, e.g. a low pass or high pass filter
• CPC Class Codes: F02D 2200/0408 Estimation of intake manifold pressure
• CPC Class Codes: F02D 2200/0414 Air temperature
• CPC Class Codes: F02D 2200/0416 Estimation of air temperature
• CPC Class Codes: F02D 41/0062 Estimating, calculating or determining the internal EGR rate, amount or flow
• CPC Class Codes: F02D 41/0072 Estimating, calculating or determining the EGR rate, amount or flow sensors in EGR systems F02M26/45
• CPC Class Codes: F02D 41/0087 Selective cylinder activation, i.e. partial cylinder operation deceleration cut-off F02D41/123
• CPC Class Codes: F02P 5/1502 using one central computing unit
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

An engine control system of a vehicle includes a manifold temperature module, a runner temperature module. The manifold temperature module determines a first temperature of gas in an intake manifold of an engine. The runner temperature module determines a second temperature of gas in an intake runner associated with a cylinder based on the first temperature of the gas in the intake manifold. The engine control system further includes at least one of: a fuel control module that controls fueling of the cylinder based on the second temperature of the gas in the intake runner; and a spark control module that controls spark of the cylinder based on the second temperature of the gas in the intake runner.

Claims

1. An engine control system of a vehicle, comprising:

a manifold temperature module that determines a first temperature of gas in an intake manifold of an engine;

a runner temperature module that determines a second temperature of gas in an intake runner associated with a cylinder based on the first temperature of the gas in the intake manifold; and

at least one of;

a fuel control module that controls fueling of the cylinder based on the second temperature of the gas in the intake runner; and

a spark control module that controls spark of the cylinder based on the second temperature of the gas in the intake runner.

2. The engine control system of claim 1 wherein the runner temperature module determines the second temperature of the gas in the intake runner further based on whether the cylinder is activated or deactivated.

3. The engine control system of claim 1 wherein the runner temperature module determines the second temperature of the gas in the intake runner further based an exhaust temperature and an amount of exhaust expelled from the cylinder into the intake runner.

4. The engine control system of claim 3 further comprising an exhaust residual module that determines the amount of exhaust based on whether the cylinder is activated or deactivated.

5. The engine control system of claim 4 wherein the exhaust residual module determines the amount of exhaust further based on a period when intake and exhaust valves of the cylinder are both open and an intake valve closing timing of the cylinder.

6. The engine control system of claim 5 wherein the exhaust residual module determines the amount of exhaust further based on a pressure within the intake manifold.

7. The engine control system of claim 1 further comprising a second runner temperature module that determines a third temperature of the gas in the intake runner associated with the cylinder based on the second temperature of the gas in the intake runner and whether the cylinder is activated or deactivated.

8. The engine control system of claim 7 wherein the second runner temperature module determines the third temperature further based on a previous value of the third temperature.

9. The engine control system of claim 8 wherein the second runner temperature module determines the third temperature further based on at least one of an engine speed and a mass flowrate of gas into the intake runner.

10. The engine control system of claim 9 wherein the second runner temperature module determines the third temperature based on the engine speed when the cylinder is deactivated and determines the third temperature based on the mass flowrate of gas into the intake runner when the cylinder is activated.

11. An engine control method for a vehicle, comprising:

determining a first temperature of gas in an intake manifold of an engine;

determining a second temperature of gas in an intake runner associated with a cylinder based on the first temperature of the gas in the intake manifold; and

at least one of;

controlling fueling of the cylinder based on the second temperature of the gas in the intake runner; and

controlling spark of the cylinder based on the second temperature of the gas in the intake runner.

12. The engine control method of claim 11 further comprising determining the second temperature of the gas in the intake runner further based on whether the cylinder is activated or deactivated.

13. The engine control method of claim 11 further comprising determining the second temperature of the gas in the intake runner further based an exhaust temperature and an amount of exhaust expelled from the cylinder into the intake runner.

14. The engine control method of claim 13 further comprising determining the amount of exhaust based on whether the cylinder is activated or deactivated.

15. The engine control method of claim 14 further comprising determining the amount of exhaust further based on a period when intake and exhaust valves of the cylinder are both open and an intake valve closing timing of the cylinder.

16. The engine control method of claim 15 further comprising determining the amount of exhaust further based on a pressure within the intake manifold.

17. The engine control method of claim 11 further comprising determining a third temperature of the gas in the intake runner associated with the cylinder based on the second temperature of the gas in the intake runner and whether the cylinder is activated or deactivated.

18. The engine control method of claim 17 further comprising determining the third temperature further based on a previous value of the third temperature.

19. The engine control method of claim 18 further comprising determining the third temperature further based on at least one of an engine speed and a mass flowrate of gas into the intake runner.

20. The engine control method of claim 19 further comprising:

determining the third temperature based on the engine speed when the cylinder is deactivated; and

determining the third temperature based on the mass flowrate of gas into the intake runner when the cylinder is activated.