Method and system for engine starting

Patent metadata

Field	Value
Publication number	US-2016290263-A1
Application number	US-201615182492-A
Country	US
Kind code	A1
Filing date	Jun 14, 2016
Priority date	Jan 23, 2014
Publication date	Oct 6, 2016
Grant date	—

Abstract

A method and system for improving starting of an engine is presented. In one example, the method selects a first cylinder to receive fuel since engine stop based on intake valve closing time. The method also describes selecting the first cylinder to receive fuel since engine stop based on an end of fuel injection time.

First claim

1 - 14 . (canceled)

15 . An engine system, comprising:
an engine including a cylinder; a port fuel injector positioned to supply fuel to the cylinder; and a controller including non-transitory instructions for selecting a cylinder for a first combustion event in the cylinder since engine stop in response to an end of fuel injection timing and an intake valve closing time.

16 . The engine system of claim 15 , where the end of fuel injection timing is based on an alcohol content of fuel injected to the engine.

17 . The engine system of claim 15 , where the end of fuel injection timing is based on engine temperature.

18 . The engine system of claim 15 , where the instructions select the cylinder in further response to a number of crankshaft degrees between the end of fuel injection timing and the intake valve closing time being greater than a threshold number of crankshaft degrees.

19 . The engine system of claim 18 , further comprising additional instructions for adjusting the threshold number of crankshaft degrees in response to alcohol content of fuel being injected to the engine.

20 . The engine system of claim 18 , further comprising additional instructions for adjusting the threshold number of crankshaft degrees in response to engine temperature.

Assignees

• Ford Global Tech Llc

Inventors

• Gibson Alexander O`Connor
• Wooldridge Steven
• Reiche David Bruce
• Vanderwege Brad Alan
• Sanborn Ethan D

Classifications

• F02D41/062 Primary

  for starting (F02D41/061 takes precedence) · CPC title

• F02M61/145

  the injection nozzle opening into the air intake conduit · CPC title

• F02D41/30

  Controlling fuel injection {(F02D41/182, F02D41/24 take precedence)} · CPC title

• F02D41/042

  for stopping the engine · CPC title

• F02D41/0025 Primary

  Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures · CPC title