JPS6165014A - Intake device of engine with supercharger - Google Patents

Abstract

PURPOSE:To prevent knocking and improve acceleration responsiveness by driving a refrigerator cooling the supercharged air in a supercharged engine during acceleration. CONSTITUTION:The air from an air cleaner 10 is fed into a combustion chamber C with a blower 9 through an evaporator 13, the blower 9, supercharging pipe 2, an inter-cooler 14, a throttle valve 17, and an intake port 12. The supercharged air is normally cooled with the inter-cooler 14, a control circuit 24 drives the compressor 19 of a refrigerator by detecting 25 the quick opening of the throttle valve 17, thus quickly cooling the air sucked with the evaporator 13 through a condenser 20, a refrigerant storage liquid tank 21, a pipe 22, and a flow control valve 23 operated by a signal from the control circuit 24.

Description

[Detailed description of the invention] 1. Industrial application field 1. The present invention provides supercharging for performing so-called intake supercharging.
(I'm in charge of input equipment.)

1 Continuous branch technique 1 Turbo supercharging;
[Second supercharging (sword, 1 engine/n is commonly used.

One of the major problems faced by such supercharging (a few f-inch ennons) is that the intake air is insulated by the supercharging doctor, which causes the supercharging temperature to rise significantly, so even if the supercharging pressure is increased, the The problem is that the actual filling efficiency cannot be exceeded by 70%.

In order to solve this problem, in the intake passage downstream of the supercharging melt,
It is known that a water-cooled or air-cooled intercooler is installed to lower the supercharging temperature by 1 degree Celsius, but this type of intercooler 1 has insufficient cooling capacity to lower the supercharging temperature below the external λ temperature. There is an essential drawback that the cooling capacity can only be lowered by the outside temperature.

In addition, instead of the water-cooled or air-cooled intercooler mentioned above, an evaporator with a refrigeration cycle is installed in the cern tank for buffering intake pulsation, which is installed in the intake passage downstream of the supercharging system, and the evaporator uses the evaporator to control the supercharging λ. An intake system with/without supercharging that cools the air in a mass-market manner has been proposed (see Japanese Patent Laid-Open No. 112-1981: No. 32).

As shown in L, the refrigeration cycle's evaporator is used to cool the supercharging air.
: l) it! ;;・i:i: ) Matama Cr:r large 1
11.
1 (cold: supercharged air cooled JJI) J type: compared to this (I'm worried).

Moreover, in the publication of Daikai No. 57-117723, there is a
During high-load operation, the turbocharger 11F flow (cooling &'4 is passed through the evaporator installed in the intake passage).
An air system has been proposed for 1 of Ennon, which was used in 7. However, when the high load 1 of Nakamatsu/Non is rolled, cold 11 is supplied to the evaporator of the refrigeration system. When accelerating, the supercharging air is not cooled J, lb>・G effectively, and in addition to the rapid increase in the number of light J places, the supercharging temperature also rises, making it extremely easy for engine knocking to occur. There is a problem in that if knocking occurs, the acceleration feel will be significantly impaired.

1 Objective of the Invention 1 The objective of the present invention is to reduce
Prevents knocking and improves acceleration response.
The purpose of this is to reduce the feeling of acceleration at the beginning of acceleration.

11'.
Supercharging with an evaporator installed in the bundle device't
In response to the output of output f2 and acceleration detection T first stage, the cooling east device is activated during acceleration operation, or is it the evaporator? A control means is provided to increase the flow time of h and 'L' during acceleration, and supercharging air that has been cooled by 2 hours is supplied to 2///7. Results 1 The main reason for this investigation is that when accelerating, low-temperature cooled supercharging air is supplied, so the actual charging efficiency is increased. Since the plain wood is at a low temperature, no knocking occurs and the acceleration response is improved, resulting in good acceleration feel. Read the examples in detail.

As shown in Figure 1, the Ennon 1 is equipped with a turbo supercharger 1 installed across the intake passage 2 and exhaust passage 3. As if there were
When the turbine 7 is driven at high speed by the exhaust gas discharged into the exhaust passage 3 from the exhaust port 6 opened and closed by the exhaust valve 5, the 70A IJ connected to the engine output
is driven at high speed, and one intake air is drawn in through the air cleaner 10 at 70 cm);
1, when the suction port 12 is opened, pressurized intake air, that is, supercharging air is supplied to the combustion chamber C1.

1- floor! ], In the intake passage 2 of LI++L, the evaporator 1 of the refrigeration system is installed, and the air cleaner lO is installed to cool the flX that is inhaled. In the intake passageway of the mortar 45, an air-cooled or water-cooled innotator cooled tank 15 is installed to absorb suction pulsation. h (Nido 1 I Oi 2 1 Earth, Engineering / 7 / J +, Turn 4! Inject the cliff (Kosho cored large 'l) ↓ U): Control the 11 injection nozzle 16 and the engine 7) Luhar 717 is installed.

The above-mentioned refrigeration system is used for coolers in 1 and 1 [like Rurano, the electromagnetic crank 18 is equipped with a mechanical/non-output shaft (not shown.
The leaked refrigerant is liquefied by condenser 2 () and condenser 2 (). i! The basic configuration connected in series is defined as (r
The circulation control well 23 provided in the evaporator 12 is connected to the control circuits 2 and 1 as detailed below.
controlled by

In addition, in FIG. 1, 32 is the exhaust passage 3 (a waste gate passage provided by bypassing the turbine 7 installed therein, and 33 is a waste cloth for opening and closing the waste date passage 32). -) Valve, 3.1 is waistband half 3:
1. Guyafram-type 7-cut unit that controls the opening and closing of
The 7-actuator 3t adjusts the supercharging pressure in the surgitator 15 to 11-1. 'Cross down, this supercharging + '=:'-Bh setting'
i [Z IL',, It2+:':I convex Tu', L WA do 1-shi 1 do C roto □:+ F, to Y
-1-, Lua :+ :(Open 11 to bypass -1・1t of JJF air gas, suppress the output of Tahi/7, and reduce the excessive boost pressure generated by 70a9. Prevents damage from occurring.

As shown in Fig. 2, the control circuit 2 above is a throttle opening control circuit 2 which changes the opening of the inlet and Torharz 17 to VJ3.
An acceleration detection circuit 26 receives the output of the engine/]/1 and detects the acceleration of the engine/]/1;
The electromagnetic crane for driving the compressor 19 when the acceleration is detected is turned on, and the circuit 23 of the 1/- link road 22 is opened 1'! :Φ
1 fli drive control circuits 27 are provided.

The acceleration detection circuit 26 receives the output of the small opening sensor 25 and detects the small opening from time to time.The acceleration detection circuit 26 detects the small opening from time to time.
The output of the differential circuit 29 is set by a voltage generation circuit 3, which differentiates the output of the acceleration a' and q', and a ratio of the set voltage for the acceleration a' and q' and the ratio 1.1 is set. 1 output or this setting type +1! ;: Exceeded limit: 2. When accelerating, the constant voltage comparator circuit 31 and i21 are depleted, and 2 and 2 are generated.

When the second control circuit shifts to acceleration operation, the acceleration detection circuit 26 detects this and turns on the electromagnetic clutch 18 in response to the output of the acceleration detection circuit 26. The compressor 1!+ of the refrigeration system is connected to the engine output shaft (not shown) and one brefusor is started, and at the same time, the circulation failure control valve 23 is fully opened 1' [F].

As a result, the supercharging air supplied to engine 1 during acceleration is 7
On the 0A9, the intake air is cooled by the evaporator and the rotor 131, and the intake air flows into the 70A9. Since the temperature is increased, the supercharging efficiency by the 70a 9 is improved, and the supercharging air that has been added by the blower 9 is cooled again by the intercooler 1t. Therefore, during acceleration operation, the intake air is cooled by the evaporator 1:3, and the supercharging effect T (
Filling efficiency) will be increased by one level. In addition, the 7 knobs for charging efficiency during acceleration operation are supported by cooling by the evaporator 13, and the supercharging air is at a low temperature, and the 7 knobs that control the light 114'fl effectively cause 7 knocking or knocking. There are no residential lots available.

In addition, in the example of the disaster shown in )-, the Ko/7 Tsunosa 19 is started with the start of acceleration operation, and the circulation amount H111 elevation valve z,)
11 to send the refrigerant to the evaporator 13.Other than accelerating operation, when the 19 is activated (opening the 7-23 that controls the 2-circulation amount), the odor 7. In this case, when transitioning to accelerated operation, the circulation; 1j: iil Degree: 2 open and work...Voleta 1)'s 411 old [Hika to one step Anoa r one.

In addition, when accelerating, when operating with a negative fEi outside 11, 1 evaporator 1 (for all 11), when going up (2 is an example; yo, intercooler 11), passage 2 to the suction of the flow. supercharging 1
shi (warm se/su (!! 14, small picture → upper r,) is established,
This supercharging temperature is displayed. Konaro↓Nana outside the venue is Control A Circuit 2 and Electromagnetic Cranona 1.
I'm going to turn off 6. It's better to rub it. Kagarono ^
Cτ, Ino l:,'i +l's t,,:Moi21 Instead of the supercharging temperature sensor, the output of the number of times/su is input to the total control circuit 24, and the engine speed is the set rotation. The electromagnetic clarifier H3 may be turned off until the specified number is reached.

Furthermore, in the above embodiments, supercharging (or turbo supercharging) was explained, but it goes without saying that supercharging such as volumetric volume control, etc. can also be used. do not have.

In addition, in the above embodiment, the evaporator 13 is supercharged (the support 4
Although the supercharging is installed in the intake passage 2 upstream of the engine, the supercharging may be installed in the intake passage 21 downstream of the engine.

2t1 drawing n +'ji)! Fig. 1 is a diagram showing an example of a large electric current according to the present invention, and Fig. 2 is a 70-part explanatory diagram of the control υν circuit of Fig. 1.

1 ・Engine, 2 ・1 Fire passage, 1-9-
f.

Supercharging 1: 13 ・Evaporator, 1;;...
Electromagnetic club, Su, 13"... Fu/Bre, Su, 2:
(...Circulation room.

Claims (1)

[Claims] (1) In an engine in which an evaporator of a refrigeration system is installed in the upstream intake passage or the downstream intake passage of the supercharger, there is an acceleration detection means for detecting the accelerating operating state of the engine, and an acceleration An intake system for a supercharged engine, characterized in that it is provided with a control means for operating the refrigeration system or increasing the flow rate of refrigerant in the evaporator.