CN2200698Y

CN2200698Y - Gasoline machine with mini-computer controlled fuel spurt and direct ignition for internal-combustion engine

Info

Publication number: CN2200698Y
Application number: CN 94211149
Authority: CN
Inventors: 王向东; 靳明芳; 万德民; 刘天毅; 李奕; 寇思敬; 何昱; 宋玉祥; 杨宗智; 牛斌祺
Original assignee: BEINEI GROUP GENERAL Co
Current assignee: BEINEI GROUP GENERAL Co
Priority date: 1994-05-16
Filing date: 1994-05-16
Publication date: 1995-06-14
Anticipated expiration: 2004-05-16

Abstract

The utility model relates to a gasoline machine with the mini-computer controlled fuel spurt and the direct ignition for an internal-combustion engine, which is composed of the reciprocating piston type, four upright cylinders, four strokes, water cooling, a cam shaft which adopts the top arrangement, and the inlet and the outlet valves which are arranged in a V shape. The cylinder diameter of the gasoline machine with the mini-computer controlled fuel spurt and the direct ignition for an internal-combustion engine is 82 millimeters. The utility model is characterized in that a fuel feeding device and an ignition device are a fuel injection device (TBI) and a direct ignition device (DSI) which are controlled by the mini-computer; the control device of the mini-computer can be composed of an electronic control unit (ECU), a sensor, a line bunch, etc; the gasoline machine with the mini-computer controlled fuel spurt and the direct ignition for an internal-combustion engine can precisely conduct the optimizing control to the parameters, such as the air-fuel ratio, the ignition time, etc; the engine can be ensured to lie in the optimal operation state under any working condition; the exhaust emission can be evidently improved, and the strict requirement of the environmental protection legislation to the vehicle emission can be obtained. The gasoline machine with the mini-computer controlled fuel spurt and the direct ignition for an internal-combustion engine is suitable for the power demands of the light car.

Description

Gasoline machine with mini-computer controlled fuel spurt and direct ignition for internal-combustion engine

The utility model belongs to the internal-combustion engine category, relates to a kind of microcomputer control fuel injection and direct ignition vehicle gasoline engine.

At present, the light-duty vehicle gasoline engine of domestic manufacturing and use still generally adopts the fuel oil supply device and the distributor formula ignition mechanism of mechanical type Carburetor, obviously can not satisfy Hyundai Motor to toxic emission and the higher requirement of dynamic economics.

The purpose of this utility model just provides a kind of micro-processor controlled vehicle gasoline engine, employing fuel injection fuel feeding and direct fire unit, makes motor be in the optimum state operation, and comprehensively solves the purifying exhaust air discharging and improve dynamic economics two hang-ups.

The purpose of this utility model is achieved by the following technical solution, (patent No.: ZL88207142.4) its pattern is a reciprocating piston type to the existing BN482Q type of group " a kind of vehicle gasoline engine " in north, upright four cylinders, four-stroke, water-cooled, camshaft is an overhead, inlet and exhaust valve is the ∨ type and arranges, cylinder diameter is to improve fuel delivery and ignition mechanism design on 82 millimeters the petrol engine basis, adopt micro-processor controlled throttle body gasoline injection system and direct fire unit, allow to accurately parameters such as air fuel ratio and time of ignition are optimized control, under any operating mode, all can be in optimal operational condition with the assurance motor, and give play to best performance level.

Above-mentioned design improvement of the present utility model, the stand and the service testing of engine performance have been passed through, this rated power that improves the front and back petrol engine is improved 8%, consumption rate of fired oil reduces by 10%, idle exhaust emission index: HC descends 64%, CO descends 30%, show that dynamic economics improves, toxic emission obviously improves, solved the environmental pollution problem of automobile, and improvement project organization, simple and reliable, easy to implement, the low needs that are suitable for modern light passenger-cargo carriage, car drive of cost have favorable social and economic benefits.

Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is the device schematic representation of a kind of microcomputer control fuel injection of the utility model and direct ignition vehicle gasoline engine

Embodiment of the present utility model as seen from Figure 1, the fuel delivery of a kind of microcomputer control vehicle gasoline engine of BN482QA type (18) and the composition of direct fire unit, the fuel oil supply device of this petrol engine (18) comprises oil sprayer (2A) by the throttle body injection assembly (TBI) (2) that is installed on the intake manifold (20), fuel pressure regulator (2B), idling cuts down (2C) and fuel filter (5) constitutes with the electric fuel punp (6) that is installed in the fuel tank, the mechanical type Carburetor oil supplying device that has replaced thick BN482Q type petrol engine, and be installed in direct fire unit (DIS) on the former distributor location by ignition module (9), two secondary output point fire coils (10), spark plug (11) and high voltage damper (12) constitute, replaced former distributor ignition, when engine rotation, crankshaft position sensor (8) is delivered to ignition module (9) with the engine speed and the position signal that record, signal is converted into pulse square wave and delivers to the treated optimum igniting moment that draws under this operating mode of electronic control unit (ECU) (1), by ignition module (9) primary current and the closing time of spark coil (10) are controlled again, the high pressure of two secondary spark coil outputs is lighted a fire corresponding spark plug (11) near compression stroke and exhaust stroke top dead center, so that motor is in optimum Working.

The analog circut that ignition module (9) is made up of intergrated circuit and thick film circuit, major function are the control to Signal Processing and engine start ignition timing.

Computer control device shown in Fig. 1 is by analyzing by the signal that various sensor is gathered, control reaches the optimum igniting under (rotating speed manifold absolute pressure (MAP)), engine electronic control unit of advance angle value (ECU) (1) and the throttle position sensor (TPS) that is attached thereto are (2D), cooling-water temperature transmitter (CLT) (3), air inlet absolute pressure transducer (MAP) (4), crankshaft position sensor (CPS) (8), vehicle speed sensor (VSS) (19), relay (7), storage battery (13), ignition switch (14), test plug (15), wire harness formations such as (16), and provide position reference for crankshaft position sensor (8) at crank pulley (17) outer rim fluting, the function sketch of engine electronic control unit (ECU) is as follows:

Signal input control output

The electric fuel pump of cooling-water temperature transmitter (CTS)

The sub-oil injecting nozzle of throttle position sensor (TPS)

Air inlet absolute pressure transducer (MAP) control Electronic Spark Timing

The single standby IGNITION CONTROL request of ignition switch

First trouble shooting lamp of vehicle speed sensor (VSS) and diagnosis

Reference pulse (ECU) idle valve

It is simple, reliable, easy to implement that the utility model improves project organization, be suitable for practicality, BN482Q type petrol engine and the utility model embodiment before improving, BN482QA type gasoline engine performance index after the improvement contrasts following tabular, also can go out the vehicle gasoline engine of another kind of microcomputer control fuel injection and direct ignition according to the design principle design of technique scheme, for example being suitable for 492 types is routine petrol engine, and this design can also be other similar type.

The engine performance index	BN482Q type petrol engine before improving	The utility model embodiment, the BN482QA type petrol engine after the improvement
			Type or bore/stroke (mm) discharge capacity (L) compression ratio fueller igniter rated power KW (PS) peak torque N.m power per liter KW/L torque per liter N.m/L fuel oil consumption g/KW.h idle exhaust emission HC CO	In-line four cylinder, four-stroke-cycle water-cooled 82 * 86 1.82 8:2:1 twin barrel carburetors, mechanical fuel pump mechanical type ignition distributor 55 (75) 128 30.2 70.3 298 500 PPM 0.20%	Upright four cylinders, four-stroke-cycle water-cooled 82 * 86 1.82 8:2:1 throttle body injection devices (TBI), electric fuel punp direct fire unit (DIS) 60 (81.6) 140 33.0 76.9 268.6 180 PPM 0.14%

Claims

1, a kind of microcomputer control fuel injection and direct ignition vehicle gasoline engine, for reciprocating piston type, in-line four cylinder, four-stroke, water-cooled, camshaft are overhead, the V-shaped layout of inlet and outlet door, cylinder diameter are 82 millimeters petrol engine, comprise fuel delivery and ignition mechanism etc., it is characterized in that: fuel delivery of this petrol engine (18) and ignition mechanism are micro-processor controlled gasoline injection system (TBI) and direct fire unit (DIS).

2, petrol engine according to claim 1 (18) is characterized in that: the gasoline injection system of fuel delivery (TBI) comprises by being installed in throttle body injection assembly (2) on the intake manifold (20) that oil sprayer (2A), fuel pressure regulator (2B) and idling are cut down (2C) and fuel filter (5) constitutes with the electric fuel punp (6) that is installed in the fuel tank.

3, petrol engine according to claim 1 and 2 (18) is characterized in that: the direct fire unit (DIS) that is installed on the former distributor location is made of the two secondary output point fire coils of ignition module (9) (10), spark plug (11), high voltage damper (12).

4, petrol engine according to claim 1 (18), it is characterized in that: computer control device is by analyzing by the signal that various sensor is gathered, control reaches optimum igniting under (rotating speed manifold absolute pressure (MAP)), and engine electronic control unit of advance angle value (ECU) (1) and the throttle position sensor (TPS) that is attached thereto are (2D), cooling-water temperature transmitter (CLT) (3), air inlet absolute pressure transducer (MAP) (4), crankshaft position sensor (CPS) (8), vehicle speed sensor (VSS) (19) and relay (7), storage battery (13), ignition switch (14), test plug (15), wire harness compositions such as (16).