Engine control device for and administration system for construction machine

Abstract

An engine control device for a construction machine has an engine (10), a hydraulic pump (5) driven by the engine as the power source, a hydraulic actuator (6) actuated by pressurized oil discharged from the hydraulic pump (5), a working state-determining portion (7) for determining whether the construction machine is in a working state or in a non-working state, and an engine control portion (8) for automatically stopping the engine (10) when the working state-determining portion (7) determines that the machine is in a non-working state. The engine control device is characterized in that it has stop record-memorizing portions (13, 14, 16) for readably memorizing the record of stops, actuated by the engine control portion (8), of the engine (10).

Description

technical field [0001] The present invention relates to an engine control device and a management system for a construction machine that automatically stops the engine when the engine is not in operation. Background technique [0002] Conventionally, an engine control system has been known that detects the working state of the construction machine by opening and closing a door lever that opens and closes the entrance and exit of the passenger compartment, stops the engine when a non-working state is detected, and stops the engine when an operation is detected. Continue to drive the engine in the state, thereby suppressing useless fuel consumption and reducing exhaust gas that is harmful to the environment (for example, Japanese Patent Laid-Open No. 2001-41069) [0003] According to this engine control system, when the driver gets out of the cabin, the door lever is opened, the engine is stopped, and the actuators are not operated even if each operation lever is operated. On ...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned conventional engine control system, the problem is that it cannot be grasped whether the automatic stop of the engine has been carried out to the extent related to the prevention of environmental pollution.

[0006] Specifically, although the purpose of the above-mentioned engine control system is to suppress useless fuel consumption, it is not clear what fuel saving effect can be obtained by automatically stopping the engine during non-working hours.

In particular, owners of construction machinery want to know whether the burden of fuel costs has actually been reduced, but they cannot ascertain this, so the above-mentioned engine control system cannot be evaluated.

[0007] In addition, in this system, in addition to the situation where the engine is stopped according to the driver's will when the work is over or during a break, etc., when getting out of the car for a short time or when there is a waiting time, the door lever will also be used to stop the engine. The engine is automatically stopped when it rises, so the frequency of engine starting increases, which imposes a burden on engine starting equipment such as the starter motor

Due to such a burden, the life of the starter motor is shortened, and there is a problem that construction machinery stops unexpectedly.

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