Diesel Kiki Co., Ltd.

Zexel Gmbh

Kazuo Inoue

Seishi Yasuhara

Akira Sekiguchi

Kenichi Kubo

Kyoichi Fujimori

Jun Matsubara

Kazuaki Narikiyo

Yutaka Hirano

Tsunayoshi Motoyoshi

Hiroshi Okada

Mitsuo Hagiwara

The inside of the housing is divided into a low pressure fuel area formed from a fuel inflow port through a feed pump 4 and a high pressure fuel area that can communicate with inflow/outflow ports for fuel. For instance, the low pressure fuel area may be formed as a path extending from the fuel intake port that communicates with the circumferential area of the front end of the rotor to the feed pump via the circumferential area of the rotor support member and a passage for inducing fuel from the high pressure fuel area to the circumferential area of the front end of the rotor may be formed between the rotor and its support member. The flow of fuel in the area where the rotor slides in contact with its support member is ensured, and oil film loss is prevented. With this, cooling and good lubrication in the rotor sliding contact area, where heat is likely to be generated, are promoted, to prevent seizure in the sliding contact area. Also, ports that open into the area where the rotor slides in contact with its support member and that communicates with the compression space may be provided in the rotor so that compressed fuel is supplied directly to the sliding contact area.

Distributor-type fuel injection pump

In an control apparatus for controlling a timing of injection of fuel to be injected into an internal combustion engine, the apparatus comprises a closed loop system in which the data showing the actual timing of injection of of fuel is fed back. When the condition of the operation of the engine becomes a predetermined state, the control system is changed from the closed loop system to another system in which an adjusting member for adjusting the timing of injection of fuel is controlled by a signal which is not related to the actual timing of injection. As a result, the stability of the operation in low engine speed zone is remarkably improved.

Apparatus for controlling fuel injection timing in a fuel injection pump

In a fuel injection timing control apparatus having a sensor for generating a signal indicating the actual timing of fuel injection in response to the fuel pressure occurring at the time of fuel injection for controlling the fuel injection timing in the mode of closed-loop control using the signal as a feedback signal, when the sensor stops producing the signal, the control mode is changed to the mode of open-loop control so as to continue the control operation of the fuel injection timing, and the state of zero injection of the fuel injection pump is distinguished from the occurrence of a malfunction in the sensor.

Apparatus for controlling fuel injection timing of fuel injection

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Higashimatsuyama, Japan

Kazuo Inoue