| US 7,497,199 B2 | ||
| Closed-loop electronic control system for controlling combustion in a diesel engine operating with highly premixed combustion | ||
| Silvio Canale, Strada (Italy); and Michele Pelassa, Strada (Italy) | ||
| Assigned to C.R.F. Societa Consortile per Azioni, Strada Torini (Italy) | ||
| Filed on Apr. 15, 2005, as Appl. No. 11/106,463. | ||
| Claims priority of application No. 04425444 (EP), filed on Jun. 15, 2004. | ||
| Prior Publication US 2005/0274352 A1, Dec. 15, 2005 | ||
| Int. Cl. F02B 3/00 (2006.01) | ||
| U.S. Cl. 123—299 [123/435] | 15 Claims |
| 1. A closed-loop electronic control system for controlling combustion in a diesel engine operating with highly premixed combustion,
in which an injection system is designed to enable at least two injections of a same type of fuel in one cylinder per engine
cycle, said injections comprising at least one pilot injection, wherein the at least one pilot injection is a first injection
in an engine cycle, and a subsequent main injection, said system comprising:
sensor means designed for measuring or calculating quantities characteristic of the process of fuel combustion; and
closed-loop control means, which carry out a control of the fuel-injection modality based upon the measured or calculated
value of said quantities and upon reference values by regulating at least one of the following parameters:
a) the distance in time between the pilot injection and the main injection; and
b) the amount of fuel injected by means of the pilot injection;
wherein the regulating of the at least one of the parameters of the distance in time between the pilot injection and the main
injection and the amount of fuel injected by means of the pilot injection does not vary an ignition delay of the main injection.
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