JPH03115734A - Internal combustion engine for generator with supercharger - Google Patents

Abstract

PURPOSE:To improve the mileage and the like by closing a first passage with an intake control valve, and by operating supercharger to perform supercharging from a second passage, when a load current of a generator driven by an internal combustion engine is more than a specified value. CONSTITUTION:When a load current which is higher than a specified value is detected by a load detection resistance 13 and load detector 14 both forming a load current detection means 12 set in electric circuit 11 extending to load, from a generator 2 driven by an internal combustion engine 1, the current of DC power supply 15 is used immediately so as to activate a power relay 16 thereby to close an intake control valve 5 by a device 17. A first passage 6 which intakes air via an air cleaner 4 is closed thereby. At the same time, a supercharger 7 is activated by a driving belt 9 through connection of an electromagnetic clutch 10. Consequently, supercharge to an intake manifold 3 is performed via a second passage 8 so as to cope with increase in to load.

Description

[Detailed Description of the Invention] [Industrial Application Field] According to the present invention 1, the instantaneous load application characteristics that were a problem in internal combustion engines for generators with an exhaust supercharger are improved, and the fuel is improved by adding a supercharger. Concerning an invention that makes it possible to minimize the increase in the consumption rate.

[Conventional technology]

Conventionally, as an internal combustion engine for a one-engine TFT aircraft, an internal combustion engine equipped with an exhaust supercharger exists.

[The problem that the invention aims to solve]

By the way, the exhaust supercharger has problems in that transient response is poor and instantaneous load application characteristics are poor due to the time lag of the turbocharger, and since the supercharger requires driving horsepower, the fuel consumption rate is low. There is a problem that the cost is high.

[Means to solve the problem]

Here, the present invention comprises a first passage that is opened and closed by an intake control valve and a second passage that has a supercharger interposed therebetween, as a passage leading to an intake manifold of an internal combustion engine that drives a generator. 1 generator is provided with a load current detection means, and when the load current detected by the load current detection means exceeds a predetermined value, the intake control valve is operated to close the first passage and the supercharger is activated. Start it,
It is characterized in that supercharging is performed through the second passage. This project proposes an internal combustion engine for use in generators with a supercharger.

[Effect]

In other words, the present invention has an output range exceeding the load current (appropriately 50% or more in practice).

The supercharger is driven to instantly respond to the increase in load, and below that, the supercharger is not used to reduce the fuel consumption rate. Explain according to the following.

In FIG. 1, 1 is an internal combustion engine, and 2 is a generator driven by this internal combustion engine.

For the intake manifold 3 of the internal combustion engine 1, a first passage 6 in which an intake control valve 5 is installed and a second passage 8 in which a supercharger 7 is interposed are configured as passages for intake air via an air cleaner 4. However, this supercharger 7 is driven via an electromagnetic clutch 10 whose rotation is transmitted by a drive belt 9 from a crankshaft (not shown).

On the other hand, in the embodiment shown in Figure 1, a load current detection means 12 is provided in an electric circuit 11 extending from the generator 2 to a load (not shown).

This means 12 consists of a load detection resistor 13 and a load detection device 1 connected thereto, and this load detection device 14 is connected to a power relay 16 using a DC WL source (battery monthly 5 current).
and operate the intake control valve 5.
a valve operating device 17 that opens and closes the W;
1 magnetic clutch 10.

That is, when the load detecting resistor 13 and the load detecting device 14 detect a load itt flow exceeding a predetermined value, the intake control valve 5 is immediately closed to close the first passage 6, and at the same time, the direct connection to the crankshaft is The supercharger 7 starts and supercharges the intake manifold 3 via the second passage 8.

This is to deal with the increase in load.

J! @fi Detects the current of 2 and supercharger 7
It is appropriate to operate within the shaded range in FIG. 2, which is practically an output range of 50% or more of the load current.

In addition to the above-mentioned example, the load current detection means 12 can also be controlled by a load sensor from a fuel injection pump and a rotation sensor, and in a generator equipped with an electronic governor, the above-mentioned sensor is incorporated. Therefore, it is easier to apply.

[Effect of the invention J] According to the above-described configuration of this invention, the supercharger is not used while the two generators are being used at a relatively low load, so the fuel consumption rate can be suppressed within a low range. - Once a high load is detected, the supercharger can respond to the increase in load very quickly without any response delay. 2. Supercharging by the supercharger;
Accordingly, the output of the internal combustion engine can be increased.

[Brief explanation of drawings]

The attached drawing is a layout diagram of one embodiment of this invention. FIG. 2 is a diagram showing the operating range of the supercharger. In addition, in the figure, l internal combustion engine 2 generator 3 intake manifold 5 intake control valve 6 first passage 7 supercharger 8 second passage 12 load current detection means. 15 12: Load current detection means j5 Hyper/Nano j6: Power relay +7 Hard power hMhr-λ Figure 0Hz Idling 1500r, p, -yn-1800r, p, m. 1. Procedure amendment band is formula) % formula % 1. Indication of case 1999 Patent Application No. 252295 2. Name of invention Internal combustion engine for generator with supercharger 3. Person making amendment Relationship with case Patent applicant (546) Name: Hino Motors Co., Ltd. (Delivery date: December 26, 1999) (Contents of 7° amendment) “Attached drawings” in page 6, item 9Fi of the specification is amended as follows: Figure 1 is

Claims (1)

[Claims] (1) As a passage leading to the intake manifold of the internal combustion engine that drives the generator, the first passage is opened and closed by an intake control valve, and the second passage has a supercharger interposed therebetween. The machine is provided with a load current detection means, and when the load current detected by the load current detection means exceeds a predetermined value, the intake control valve is operated to close the first passage,
An internal combustion engine for a generator with a supercharger, characterized in that the supercharger is activated and supercharging is performed through a second passage.