Kawasaki Jukogyo Kabushiki Kaisha

Kozo Suzuki

Yoji Fukami

Makoto Furukawa

Hisatoyo Arima

Toshiyuki Tsubone

Yasuhiro Kuji

Takeru Oshima

Takuya Sakamoto

Hirohide Matsushima

Yosuke Nonaka

Daisuke Yanase

Yoshinobu Mori

Shinichi Kuratani

Takashi Abe

Takeshi Ikeda

Tsuyoshi Takeuchi

An air-fuel ratio control system of an internal combustion engine comprises a fuel amount determiner for determining a fuel command value. The fuel amount determiner has a feedback control mode in which the fuel amount determiner determines a running state reference coefficient corresponding to a running state detected by a running state detector based on a first correspondence stored in the memory, determines a running state compensation coefficient corresponding to the running state detected by the running state detector based on a second correspondence stored in the memory, determines a feedback compensation coefficient used to cause an air-fuel ratio to reach a value closer to a theoretical air-fuel ratio based on an output of the air-fuel ratio sensor, and determines the fuel command value using a formula including the determined running state reference coefficient, the determined running state compensation coefficient, and the determined feedback compensation coefficient.

Air-fuel ratio control system and air-fuel ratio control method of internal combustion engine

A vehicle including an engine coupled to a transmission via a clutch, includes a fuel feed stop controller configured to stop fuel feeding to the engine when a first fuel feed stop condition is satisfied, and a clutch state detector configured to detect whether the clutch is engaged or disengaged, wherein the fuel feed stop controller is configured to resume the fuel feeding to the engine, when a second fuel feed stop condition continues to be satisfied and the clutch continues to be disengaged for a predetermined delay time from a time point when the first fuel feed stop condition is satisfied and the clutch state detector starts to detect that the clutch is disengaged.

Vehicle and fuel feed stop controller

A plurality of catalytic units () and () are disposed in series with each other in a direction conforming to the direction (X) of flow of the exhaust gases (G) and include respective honeycomb carrier structure each having a catalyst deposited thereon. Of the plural catalytic units, at least two catalytic units () and (), which are positioned downstream and upstream relative to each other with respect to the direction (X) of flow of the exhaust gases (G), respectively, are such that the downstream catalytic unit () has a higher cell density, a smaller capacity of the honeycomb carrier structure and a larger amount of an element, due to become a major catalyst, carried thereby per unitary capacity than those in the upstream catalytic unit ().

Exhaust gas purifying apparatus

A method of controlling a variable valve timing system comprising calculating, by a sliding mode control, a first control amount based on a deviation between a target value and an actually measured value of the position of the displacing member of the variable valve timing system, calculating a second control amount by integrating the deviation as an input when the deviation falls within a predetermined numeric value range containing a zero value, or by integrating the zero value as the input when the deviation falls outside the predetermined numeric value range; and adding the first control amount and the second control amount to set a compensation control amount for compensating the position of the displacing member.

Method of controlling variable valve timing system, controller, and motorcycle including controller

An engine including an oil passage through which oil output from an oil pump flows, an oil cooler mounted to the oil passage, and a branched oil passage for a hydraulically-powered device of the engine that is configured to branch in a location of the oil passage extending from the oil pump to the oil cooler to deliver the oil to the hydraulically-powered device.

Engine

An oil feeding system of an engine equipped with a transmission configured to change a rotational speed of rotation of a crankshaft and to output the rotation, including an oil pump configured to be driven in cooperation with the rotation of the crankshaft, an oil passage through which the oil outflowing from the oil pump flows, in which the oil passage includes a transmission oil passage through which the oil outflowing from the oil pump is guided to the transmission, and an engine body oil passage through which the oil outflowing from the oil pump is guided to portions other than the transmission, and an oil control portion configured to change a ratio between a pressure of the oil flowing through the transmission oil passage and a pressure of the oil flowing through the engine body oil passage.

Oil feeding system of engine

To provide an improved swirl forming device in a combustion engine, which is effective to promote a vigorous and massive swirling motion of the charge mixture within the combustion chamber, the swirl forming device includes an auxiliary passage () for introducing an auxiliary gas, which may be either air or a charge mixture, into the combustion chamber () from a location immediately upstream of the intake port () that is selectively opened and closed by the intake valve (). This auxiliary passage () has an open end () positioned adjacent the exhaust port (), such that when viewed from top in a direction conforming to the longitudinal axis (CC) of the cylinder bore (), the auxiliary gas is introduced in a direction different from the direction (N) normal to the inner peripheral surface () of the cylinder bore () to thereby form a swirl (S) along the inner peripheral surface () of the cylinder bore ().

Growing community of inventors

Kobe, Japan

Kozo Suzuki