1
David J H Peacock: IC engine cylinder output power measurement apparatus by monitoring the output of an alternator driven by the engine. Kirschstein Ottinger Israel & Schiffmiller, February 11, 1992: US05087881 (141 worldwide citation)

The apparatus for measuring the comparative output power of each cylinder of a multi-cylinder engine comprises a digital signal processor 1 and a phase locked loop detector 2. By inputting instantaneous current measurements from (e.g.) a current transformer attached to an alternator output of an eng ...


2
Hirt Dieter, Gerlich Leonhard, Heinle Eugen: Method and apparatus to monitor quality of operation of a piston in a cylinder. Maschinenfabrik Augsburg Nurnberg Aktiengesellschaft, Flynn & Frishauf, January 8, 1974: US3783681 (77 worldwide citation)

A transducer is connected to the cylinder sleeve or liner, and deflection, preferably axial vibration or oscillation of the liner is converted into an electrical signal, which is integrated, and detected with respect to a reference level; if a vibration frequency, particularly in the ultrasonic rang ...


3
Isoroku Kubo, Amarjit S Ghuman: Rankine-diesel integrated system. Cummins Engine Company, Neuman Williams Anderson & Olson, February 20, 1990: US04901531 (55 worldwide citation)

A system is provided for increasing the efficiency of internal combustion engines operating at high loads and more particularly to a multi-cylinder engine in which at least one cylinder is used as the power recovery device. The waste heat generated during operation of the engine is utilized for prod ...


4
Hitoshi Motose, Hidetoshi Ishigami: Fuel control for multi-cylinder engine. Sanshin Kogyo Kabushiki Kaisha, Knobbe Martens Olson & Bear, December 17, 1996: US05584266 (54 worldwide citation)

A fuel induction system for an internal combustion engine which includes a throttle valve that is positioned substantially open under idle and near idle engine running conditions. The system includes means for disabling one or many of the cylinders in order to maintain a low engine rotational speed ...


5
Nagahiro Kenichi: Valve operation stopping means for multi-cylinder engine. Honda Giken Kogyo Kabushiki Kaisha, Lyon & Lyon, March 18, 1986: US04576128 (52 worldwide citation)

A valve operation stopping mechanism for multi-cylinder internal combustion engine to cause selected cylinders to be inoperative under low load conditions for economy. A drive rocker arm is normally pivoted by a cam for each selected cylinder, a driven rocker arm is engaged with the suction or exhau ...


6
Kevin J Bush, Sanjay Dua, Neil J Adams, Craig R Markyvech: State estimator based exhaust gas chemistry measurement system and method. Motorola, Nicholas C Hopman, July 9, 1996: US05535135 (40 worldwide citation)

A system, and a corresponding method, for measuring a chemical concentration of a gas exhausted from exhaust ports (409, 413) of a multi-cylinder internal combustion engine (401) includes a gas sensing device. This device (419) is preferably a UEGO (Universal Exhaust Gas Oxygen) sensor. The gas exha ...


7
Katsuhiko Motosugi, Shuhei Toyoda, Hiroshi Takahashi, Toshio Tanahashi: Intake system of a multi-cylinder internal combustion engine. Toyota Jidosha Kogyo Kabushiki Kaisha, Kenyon & Kenyon, December 23, 1980: US04240387 (39 worldwide citation)

A multi-cylinder engine comprising a carburetor housing forming therein at least two branch mixture passages. Each of the branch mixture passages is connected to a respective intake port. A throttle valve of the carburetor is provided for each cylinder. Each of the throttle valves is arranged in the ...


8
Masuo Amano, Toshio Tanahashi: Combustion promoting device of a multi-cylinder engine. Toyota Jidosha Kogyo Kabushiki Kaisha, Kenyon & Kenyon, March 11, 1980: US04192265 (36 worldwide citation)

Disclosed is a multi-cylinder engine having auxiliary valves, in addition to intake and exhaust valves. Each of the cylinders is connected to a common accumulation chamber via corresponding branches. Each of the auxiliary valves is arranged in its respective branch and opens over almost the entire p ...


9
Yasutoshi Nanyoshi, Hiroshi Komatsu: System and method for controlling a combustion state in a multi-cylinder engine for a vehicle. Nissan Motor Company, Foley & Lardner, May 21, 1991: US05016591 (35 worldwide citation)

A system and method for controlling combustion state for an internal combustion engine during engine idling which measures the angular speed of the engine cylinders for a certain interval whenever a predetermined crank angle is reached, and detects a combustion state of a given cylinder in the combu ...


10
Darren A Schumacher, Kevin J Bush: Adaptive transient fuel compensation for a spark ignited engine. Motorola, Nicholas C Hopman, July 1, 1997: US05642722 (35 worldwide citation)

A method and system for adaptive transient fuel compensation in a cylinder of a multi-cylinder engine estimates fuel puddle dynamics for the cylinder by determining parameters of a wall-wetting model every engine cycle of the multi-cylinder engine. Fuel delivery to the cylinder is adjusted dependent ...