# US 2014/0156167 A1 · Simplified method to inject ethanol or other solution additives into diesel engines equipped with a digital data bus

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- Number: US 2014/0156167 A1
- Document ID: US20140156167A1
- Status: Published application
- Kind: A1
- Application number: 14/097,507
- Filed: 2013-12-05
- Published: 2014-06-05
- Earliest claimed: 2012-12-05
- Assignees: Electromotive, Inc.
- Applicants: Electromotive, Inc.
- Inventors: William A. LUKACZYK; Jonathan W. RAWLINGS
- Web page: https://patentgrep.com/patent/US20140156167A1

## CPC

- F02D 19/12: peculiar to engines working with non-fuel substances or with anti-knock agents, e.g. with anti-knock fuel
- F02B 47/02: the substances being water or steam
- F02D 19/066: {Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels}
- F02D 41/3094: {the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder}
- F02D 41/0025: {Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures}
- F02M 25/022: Adding fuel and water emulsion, water or steam
- Y02T 10/12: Improving ICE efficiencies
- 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)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A system for the delivery of ethanol or other solution additives to the intake manifold of compression ignition diesel engines comprising an electronic control module containing a microcomputer capable of monitoring SAE J1939 serial data, receive a signal from an additive monitoring sensor and have outputs to turn on a pump relay, indicator lamp and from 1 to n pulse width modulated electrical fluid injectors.

## Claims

### Claim 1

A system for the delivery of ethanol or other solution additives to the intake manifold of compression ignition diesel engines comprising an electronic control module containing a microcomputer capable of monitoring SAE J1939 serial data, receive a signal from an additive monitoring sensor and have outputs to turn on a pump relay, indicator lamp and from 1 to n pulse width modulated electrical fluid injectors.

### Claim 2 (depends on 1)

The system of claim 1 wherein the microcomputer retrieves various data parameters from the J1939 data stream such as engine RPM, Engine load, coolant temperature and other data.

### Claim 3 (depends on 1)

The system of claim 1 wherein the microcomputer determines if the proper level of additive is present and when the proper engine operating conditions are met, can turn on a fluid pump electrical relay.

### Claim 4 (depends on 1)

The system of claim 1 wherein the microcomputer calculates with linear interpolation and extrapolation software routines from data stored in a 3 dimensional array a desired injector pulse width.

### Claim 5 (depends on 1)

The system of claim 1 wherein the system does not use a crankshaft sensor or other direct means to measure engine speed or crankshaft position and instead is using data from the J1939 data bus.

### Claim 6 (depends on 1)

The system of claim 1 wherein the system does not use a pressure sensor or other direct means to measure engine load or fuel rate and instead is using data from the J1939 data bus.

### Claim 7 (depends on 1)

The system of claim 1 wherein the system can create a start of injection pulse instants which are not exactly synchronized to the exact position of the crankshaft but occur at a rate of injection which is approximately proportional to the speed of crankshaft rotation and such injection rate is constantly adjusted to the most recently available RPM value as obtained from the J1939 data.

### Claim 8 (depends on 1)

The system of claim 1 including an ability to allow arbitrary injector output pattern firing-orders by use of a programmable table.

### Claim 9 (depends on 1)

The system of claim 1 wherein the microcomputer monitors the additive fluid level or pressure and turn on a diagnostic lamp or notify the operator in another way if the system operation is not within prescribed parameters.

### Claim 10 (depends on 1)

The system of claim 1 wherein the microcomputer uses a data communications interface to a PC type computer and a graphical human interface to allow for modifications to stored calibration parameters and to see current operating conditions within the system.