Yanmar Co., Ltd.

Nitto-denko Corporation

Yanmar Power Technology Co., Inc.

Tomohiro Fukuda

Taichi Togashi

Atsushi Ohta

Yasuo Noma

Hiroshi Oohashi

Tomohiro Otani

Atsuhito Iwase

Yasuaki Oku

Yuki Fujimoto

Kazuhiro Yamada

Takashi Miyamoto

Hideo Shiomi

Hitoshi Adachi

Go Asai

Takahiro Uchida

Katsunari Jonouchi

Isao Takagawa

Atsushi Ueta

Yusuke Amari

Takamitsu Oota

Katsunari Jounouchi

The objective of the present invention is to provide an engine with improved startability and stable operation regardless of the driving environment and usage conditions. The engine is equipped with a control means, which calculates a standard injection timing on the basis of the target rotational frequency of the engine and a standard injection amount, that is, the amount of fuel injected, and which corrects the standard injection timing using at least one correction amount. A fuel injection control unit calculates a cooling water correction amount on the basis of the target rotational frequency of the engine, the standard injection amount, and the cooling water temperature, and when the cooling water temperature is less than a first prescribed temperature the control unit corrects the standard injection timing using only the cooling water correction amount.

Engine

It is an object to make it possible to burn and remove particulate matter without generating runaway even if the particulate matter is excessively accumulated at the time of regeneration of an exhaust gas purification device. A common rail engine and the exhaust gas purification device placed in an exhaust gas path of the engine are provided. A plurality of regeneration controls for burning and removing the particulate matter accumulated in the exhaust gas purification device can be executed. The plurality of regeneration controls include at least non-operation regeneration control for raising exhaust gas temperature by combining post injection (E) and predetermined high speed rotation speed, and recovery regeneration control which can be executed when the non-operation regeneration control fails. In the non-operation regeneration control and the recovery regeneration control, the engine is driven exclusively for burning and removing the particulate matter. The recovery regeneration control is carried out at exhaust gas temperature lower than that of the non-operation regeneration control while taking time longer than that of the non-operation regeneration control.

Exhaust gas purification system

An exhaust gas purification system comprises an exhaust gas purification device which is arranged in an exhaust gas route of an engine, renewing devices for burning and removing a particulate matter within the exhaust gas purification device, renewal advance notifying means which is actuated in the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, and renewal informing means which informs of a fact that the renewing devices are under operation. The renewal advance notifying means is actuated before actuating the renewing devices.

An exhaust gas purifying apparatus includes an oxidative catalyst and a filter that are disposed in an exhaust gas path of an engine; a fuel injecting device that injects fuel according to a fuel injection pattern; and a control device that estimates a deposition amount of a particulate matter and sets the fuel injection pattern. When the fuel injection pattern including post-injection is set to recover the filter, the fuel injection pattern is set such that a post-injection amount is reduced as the deposition amount increases.

Exhaust gas purifying device

An engine includes a control means that calculates a standard injection time based on the target number of revolutions of the engine and a standard injection amount being a fuel injection amount of the engine and corrects the standard injection time based on at least a correction amount, and a fuel injection control unit calculates a coolant correction amount based on the target number of revolutions, the standard injection amount, and a coolant temperature of the engine, and when the coolant temperature is less than a first predetermined temperature, the fuel injection control unit corrects the standard injection time only based on the coolant correction amount.

An exhaust gas purification system comprises an exhaust gas purification device which is arranged in an exhaust gas route of an engine, renewing devices, for burning and removing a particulate matter within the exhaust gas purification device, renewal advance notifying means which is actuated in the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, and renewal informing means which informs of a fact that the renewing devices are under operation. The renewal advance notifying means is actuated before actuating the renewing devices.

An object is to provide an electronically controlled diesel engine capable of inhibiting the drastic increase of the fuel injection quantity from the fuel injection quantity before acceleration without the measurement of the relation between the number of revolutions of an engine, boost pressure, and the upper smoke limit of the fuel injection quantity. An electronically controlled diesel engine includes an judge part of an acceleration () that judges whether a control of acceleration is finished or not based on a difference between a target number of revolutions of the engine (Nset) and an actual number of revolutions of the engine (Ne). The electronically controlled diesel engine includes that the calculate part of a third upper limit of a fuel injection quantity () that is included in the calculate part of the upper limit of the fuel injection quantity () that sets an initial upper limit of a fuel injection quantity (Q) to a bigger injection quantity either of an injection quantity at the time of the judgment and a limit of a injection quantity based on the actual number of revolutions of the engine (Ne) at the time of the judgment when the judge part of an acceleration () determines that the condition of acceleration in the low speed area are satisfied and recover the limit value to the normal limit value until the judgment means of cancel of acceleration in the low speed area determines that the condition of cancel of acceleration in the low speed area are satisfied.

Electronically controlled diesel engine

A method determines a correction amount of an EGR valve opening degree. A basic correction amount map is generated indicating a correlation between rotating speed, load factor, and the correction amount, while the opening degree is maintained at a reference opening degree and the EGR rate is maintained at a target EGR rate, based on correction amounts obtained for mutually different individual combinations of the rotating speed and the load factor. Estimated values of the correction amounts not contained in the basic map are acquired by estimating the distribution of the amounts not in the basic map based on a distribution trend. An extended correction amount map is generated indicating a correlation between the estimated values of the rotating speed, the load factor, and the correction amount while the opening degree is maintained at a reference opening degree and the EGR rate is maintained at a target rate.

Method of determining correction amount of opening degree of EGR valve, method of controlling opening degree of EGR valve, and engine

The present invention relates to a process for producing a resin composition for an optical semiconductor from a powdery material and a liquid material using a kneader having a first supply port and a secondary supply port disposed at a downstream side of the first supply port, the process including: a step of supplying the powdery material into the kneader from the first supply port and delivering the powdery material to a second supply port side by the kneader at a temperature at which the powdery material is not melted; a step of melting the powdery material by heating and simultaneously supplying the liquid material from the second supply port under a pressure higher than a pressure in the kneader to knead a melted product of the powdery material and the liquid material; and a step of further kneading a kneaded product thereof while cooling.

Process for producing resin composition for optical semiconductor

An exhaust gas purification device is arranged in an exhaust gas route of a common rail type engine. At least one of an intake air throttle device and an exhaust gas throttle device are arranged in intake and exhaust systems of the engine. In the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, an auxiliary renewing mode which raises the temperature of an exhaust gas from the engine by actuating at least one of the intake air throttle device and the exhaust gas throttle device is executed, and in the case that the clogged state of the exhaust gas purification device is not improved even by executing the auxiliary renewing mode, a forced renewing mode which supplies a fuel into the exhaust gas purification device by a post injection is executed.

Provided is a diesel engine which can efficiently regenerate a diesel particulate filter. The control for regeneration using an ECU includes a first regeneration by burning particulate matter at slightly more than 300&#xb0; C. for 20 minutes when the accumulation of particulate matter exceeds a first threshold; a second regeneration by burning particulate matter at approximately 560&#xb0; C. for 30 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds the first threshold for a first predetermined period of time, or every 100 hours; and a third regeneration by burning particulate matter at approximately 600&#xb0; C. for 15 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds a second threshold and an emergency regeneration switch is pushed, or after 50 hours since the second or third regeneration and the emergency regeneration switch is pushed.

Growing community of inventors

Osaka, Japan

Tomohiro Fukuda