About 22 results
https://drivepatents.com/patents/983496 · 9 Oct 2013
The subject of the invention is a non-invasive method of diagnosing injection systems of self-ignition engines, marine engines in particular. The diagnostic method of the fuel injection process in a self-ignition engine in this invention is characterized b...
https://drivepatents.com/patents/999678 · 8 Aug 2012
An internal combustion engine control apparatus includes an output-current abnormality-signal holding unit (112) that determines whether a current abnormality signal is being output from a current-abnormality detecting unit (108, 110), which compares a cur...
https://drivepatents.com/patents/1011609 · 22 Jun 2011
The engine (1) has two injection pumps (2, 3) driven by a camshaft/crankshaft of the engine. The pumps convey a fuel into a common rail (4) and into a respective cylinder head of the engine. The common rail has a rail pressure sensor (5), which determines ...
https://drivepatents.com/patents/1085881 · 30 Jun 2004
The arrangement has a pump element, a pressure damper with a vent line for compensating fluctuations on the low pressure input side and a shut-off valve in the vent line, whose end not connected to the pressure damper is connected to the clean air side of ...
https://drivepatents.com/patents/1091038 · 17 Dec 2003
A fuel supply control system is arranged to execute a first diagnosis based on the a fuel injection quantity (Qi) and a fuel pump discharge quantity (Q) after a feedback control of a fuel pressure (p) is started, to execute a second diagnosis when a result...
https://drivepatents.com/patents/1093195 · 17 Sep 2003
The control and/or diagnosis process is for an engine (1) with a mixture adaptation function. Fuel from at least one valve (5) is injected directly into at least one combustion chamber (4). The process is implemented by means of a computer program for a mo...
https://drivepatents.com/patents/1095582 · 4 Jun 2003
In a redundant mechanism having two pressure regulating valves for covering one of the pressure regulating valves when the other one is in the defective conditions, quick recognition of the defective side is enable when one of them are in the defective con...
https://drivepatents.com/patents/1096052 · 14 May 2003
An excessive volume of fuel discharged by a high-pressure supply pump (3) to a common rail (4) due to an opened state abnormality of an inlet metering valve (7) may result in an abnormal increase in common rail pressure. In the event of such an abnormal in...
https://drivepatents.com/patents/1101824 · 11 Sep 2002
To detect a failure of the fuel heaters of a multi-cylinder internal combustion engine of vehicles by utilizing a microcomputer of a vehicle operation control device and sensors already provided in the vehicle such as an air/fuel ratio sensor or a cranksha...
https://drivepatents.com/patents/1110181 · 19 Sep 2001
The method involves modeling a pressure regulator and/or actuator in a pressure regulating circuit. The model produces at least one signal characterizing the noise parameters in the pressure regulating circuit. An injection quantity, a leakage quantity, a ...