# US 5,706,783 A · Engine control arrangement

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- Number: US 5,706,783 A
- Document ID: US5706783A
- Status: Granted
- Kind: A
- Application number: 08/702,889
- Filed: 1996-08-26
- Granted: 1998-01-13
- Earliest claimed: 1995-08-25
- Assignees: Yamaha Hatsudoki Kabushiki Kaisha
- Inventors: Yuichiro Sawada
- Web page: https://patentgrep.com/patent/US5706783A

## CPC

- F02B 61/045: {for marine engines}
- F02B 75/22: with cylinders in V, fan, or star arrangement
- F02D 43/00: Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
- F02B 2075/1824: {six}
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)

## Abstract

An improved fuel injection and ignition control system for an engine, wherein the fuel injectors and ignition are controlled by respective circuits mounted on a common substrate but spaced from each other. The assembly is potted in a resin for electrical and heat insulation. The resulting control box can easily be mounted in the valley of a V-type engine in the powerhead of an outboard motor.

## Claims

### Claim 1

A control arrangement for an internal combustion engine having at least one fuel injector for injecting fuel for combustion in a combustion chamber and at least one spark plug for firing the charge in that combustion chamber, said engine control arrangement comprising a substrate, an ignition control circuit mounted on said substrate at a first location thereon, an injection control circuit mounted on said substrate at a second location spaced from the said first location, and a potting compound containing said ignition control circuit and said fuel injection control circuit, and a plurality of conductors for transmitting control signals to said circuits and for transmitting control signals from said circuits to the fuel injector and the spark plug.

### Claim 2 (depends on 1)

A control arrangement for an internal combustion engine as set forth in claim 1, wherein the engine is comprised of the V-type engine having a pair of inclined cylinder banks each having a plurality of fuel injectors and spark plugs for said banks and wherein the control arrangement is mounted in the valley between said cylinder banks.

### Claim 3 (depends on 2)

A control arrangement for an internal combustion engine as set forth in claim 2, wherein the fuel injection control circuit is disposed adjacent one of the cylinder banks and the ignition control circuit is disposed adjacent the other of the cylinder banks.

### Claim 4 (depends on 1)

A control arrangement for an internal combustion engine as set forth in claim 1, wherein the power supply conductors are spaced from the signal supply conductors and from the sensors conductors.

### Claim 5 (depends on 4)

A control arrangement for an internal combustion engine as set forth in claim 4, wherein the engine is comprised of the V-type engine having a pair of inclined cylinder banks each having a plurality of fuel injectors and spark plugs for said banks and wherein the control is mounted in the valley between said cylinder banks.

### Claim 6 (depends on 5)

A control arrangement for an internal combustion engine as set forth in claim 5, wherein the fuel injection control circuit is disposed adjacent one of the cylinder banks and the ignition control circuit is disposed adjacent the other of the cylinder banks.